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X-ORIGINAL-URL:https://www.ift.uam-csic.es
X-WR-CALDESC:Events for Instituto de Física Teórica
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TZID:Europe/Madrid
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
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TZNAME:CEST
DTSTART:20250330T010000
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TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
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TZNAME:CEST
DTSTART:20260329T010000
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DTSTART:20261025T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260409T120000
DTEND;TZID=Europe/Madrid:20260409T130000
DTSTAMP:20260714T154701
CREATED:20260406T165602Z
LAST-MODIFIED:20260406T165602Z
UID:24868-1775736000-1775739600@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club
DESCRIPTION:Every Thursday at 12:00 in Grey Room 3.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-11/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260409T120000
DTEND;TZID=Europe/Madrid:20260409T170000
DTSTAMP:20260714T154701
CREATED:20260406T165534Z
LAST-MODIFIED:20260406T165534Z
UID:24867-1775736000-1775754000@www.ift.uam-csic.es
SUMMARY:Strings\, Pheno and the Swampland (SPS) Journal Club
DESCRIPTION:Every Thursday at 12:00 in the Red Room.
URL:https://www.ift.uam-csic.es/event/strings-pheno-and-the-swampland-sps-journal-club-2/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260409T150000
DTEND;TZID=Europe/Madrid:20260409T160000
DTSTAMP:20260714T154701
CREATED:20260310T093813Z
LAST-MODIFIED:20260407T094840Z
UID:24570-1775746800-1775750400@www.ift.uam-csic.es
SUMMARY:Seminar: 'EFTs for BSM: Counting\, Ambiguities\, and Application'
DESCRIPTION:Title: ‘EFTs for BSM: Counting\, Ambiguities\, and Application’\n\n\nSpeaker: Shakeel Ur Rahaman (IPPP Durham).\n\n\nVenue&Time: Red Room / 15:00 \nAbstract: The two principal frameworks for modeling the Beyond Standard Model physics as an Effective Field Theory (EFT) are the Standard Model EFT (SMEFT) and the Higgs Effective Field Theory (HEFT). SMEFT is constructed in the electroweak symmetric phase\, inherently utilizing the Higgs doublet\, whereas HEFT is defined in the broken phase using the physical Higgs boson alongside a separate set of Goldstone bosons. The unavoidable necessity of truncating these effective field theory expansions creates technical ambiguities that are fundamentally interwoven with the redundancies inherent in general field redefinitions. In this talk regarding HEFT\, the focus will be primarily on its methodology for building operators\, its power counting scheme\, and the associated truncation uncertainties. These properties are already well-established within the SMEFT framework. For SMEFT\, the discussion will center on its application in precision calculations and its practical implementation in Monte Carlo event generators such as Sherpa.
URL:https://www.ift.uam-csic.es/event/seminar-by-shakeel-ur-rahaman/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260414T113000
DTEND;TZID=Europe/Madrid:20260414T130000
DTSTAMP:20260714T154701
CREATED:20260330T091653Z
LAST-MODIFIED:20260413T102636Z
UID:24672-1776166200-1776171600@www.ift.uam-csic.es
SUMMARY:POSTPONED: HoloClub: 'Holographic transport in anisotropic systems'
DESCRIPTION:Title: Holographic transport in anisotropic systems \nSpeaker: Claire Moran (Utrecht University) \nVenue&Time: Red Room / 11:30 \nAbstract: Understanding transport in strongly coupled quantum systems remains a central challenge across high-energy physics\, condensed matter\, and quantum many-body theory. Of particular interest is systems exhibiting anisotropy\, where the anisotropy leads to a much richer transport structure\, with new transport coefficients emerging. The bulk viscosity becomes especially subtle in anisotropic media\, where it can couple nontrivially to directional degrees of freedom and underlying microscopic structure. In this talk\, I will discuss a recently developed holographic method for computing the bulk viscosity in such systems. This approach circumvents technical obstacles present in existing treatments and yields analytic expressions. I will discuss the general structure of the method\, and highlight some applications of it.
URL:https://www.ift.uam-csic.es/event/holoclub-talk-by-by-claire-moran-utrecht-university/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260414T140000
DTEND;TZID=Europe/Madrid:20260414T150000
DTSTAMP:20260714T154701
CREATED:20260406T091509Z
LAST-MODIFIED:20260406T091509Z
UID:24815-1776175200-1776178800@www.ift.uam-csic.es
SUMMARY:Cosmology Journal Club
DESCRIPTION:Every Tuesday at 2:00 PM in the discussion room on the 5th floor. \nJoin the IFT cosmology/gravity journal club at benty-fields.com to vote for papers and volunteer to present them
URL:https://www.ift.uam-csic.es/event/cosmology-journal-club-21/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260415T143000
DTEND;TZID=Europe/Madrid:20260415T153000
DTSTAMP:20260714T154701
CREATED:20260413T082635Z
LAST-MODIFIED:20260413T082635Z
UID:24885-1776263400-1776267000@www.ift.uam-csic.es
SUMMARY:Quantum Information Journal Club: 'Accessible quantum correlations under complexity constraints'
DESCRIPTION:Title: ‘Accessible quantum correlations under complexity constraints’ \nSpeaker: Álvaro Yangüez (Sorbonne Université Paris) \nVenue&Time: Gray Room 3 / 14:00 \nAbstract: \n\nQuantum systems may contain underlying correlations which are inaccessible to computationally bounded observers. We capture this distinction through a framework that analyses bipartite states only using efficiently implementable quantum channels. This leads to a complexity-constrained max-divergence and a corresponding computational min-entropy. The latter quantity recovers the standard operational meaning of the conditional min-entropy: in the fully quantum case\, it quantifies the largest overlap with a maximally entangled state attainable via efficient operations on the conditional subsystem. For classical-quantum states\, it further reduces to the optimal guessing probability of a computationally bounded observer with access to side information. Lastly\, in the absence of side information\, the computational min-entropy simplifies to a computational notion of the operator norm. We then establish strong separations between the information-theoretic and complexity-constrained notions of min-entropy. For pure states\, there exist highly entangled families of states with extremal min-entropy whose efficiently accessible entanglement in terms of computational min-entropy is exponentially suppressed. For mixed states\, the separation is even sharper: the information-theoretic conditional min-entropy can be highly negative while the complexity-constrained quantity remains nearly maximal. \n\n\nOverall\, our results demonstrate that computational constraints can fundamentally limit the quantum correlations that are observable in practice.
URL:https://www.ift.uam-csic.es/event/quantum-information-journal-club-accessible-quantum-correlations-under-complexity-constraints/
LOCATION:Gray Room 3\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260416T120000
DTEND;TZID=Europe/Madrid:20260416T130000
DTSTAMP:20260714T154701
CREATED:20260412T202323Z
LAST-MODIFIED:20260412T210607Z
UID:24879-1776340800-1776344400@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club: Unitarity limits on triple gauge boson production
DESCRIPTION:Daniel Domenech Moya (IFT) will present “Unitarity limits on triple gauge boson production”.\n\nVenue & Time: Gray Room 2 / 12:00\n\nAbstract:\n\nWe derive the unitarity constraints on anomalous quartic gauge couplings originating from the f ¯f ′ → V V ′V ′′ channel with V (′)(′′) = γ\, Z\, W ±\, and H. We also assess the importance of these bounds on the present and future experimental searches.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-unitarity-limits-on-triple-gauge-boson-production/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260416T120000
DTEND;TZID=Europe/Madrid:20260416T130000
DTSTAMP:20260714T154701
CREATED:20260412T202852Z
LAST-MODIFIED:20260413T104338Z
UID:24881-1776340800-1776344400@www.ift.uam-csic.es
SUMMARY:Strings\, Pheno and the Swampland (SPS) Journal Club
DESCRIPTION:Every Thursday at 12:00 in the Red Room. \nTitulo: The Art of Branching: Cobordism Junctions of 10d String Theories \nSpeaker: Edoardo Anastasi (IFT) \nAbstract: We describe the explicit construction of configurations of several 10d string theories joining at a 9d junction\, providing a dynamical realization of cobordisms between multiple 10d string theories\, predicted by the Cobordism Conjecture. We provide the microscopic worldsheet description of the configuration in a generalization of the `going up and down the RG flow’ interpolations recently used in the description of IIA/IIB domain wall. The interpolations involve additional degrees of freedom\, which are gapped except at the branch point\, at which the gap closes and triggers the branching transition. The extra degrees of freedom admit an interpretation in terms of additional dimensions in a supercritical string theory\, which reduces to the 10d junction configuration upon closed tachyon condensation. Quantum corrections of the 2d worldsheet theory turn the junction into a strongly coupled lightlike core whose UV resolution lies beyond worldsheet techniques. We construct explicit examples of junctions of 10d heterotic string theories\, type 0\, and type II theories and orientifolds thereof. Our explicit examples include junctions of 10d chiral theories whose chiral fields flow between different branches. One particularly nice configuration is a 4-branch junction of the IIB theory\, with type I\, the non-supersymmetric USp(32) theory and the U(32) orientifold of 0B theory\, thus assembling the four non-tachyonic descendants of type 0B theory.
URL:https://www.ift.uam-csic.es/event/strings-pheno-and-the-swampland-sps-journal-club-3/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260416T150000
DTEND;TZID=Europe/Madrid:20260416T160000
DTSTAMP:20260714T154701
CREATED:20260119T110832Z
LAST-MODIFIED:20260416T075356Z
UID:24228-1776351600-1776355200@www.ift.uam-csic.es
SUMMARY:Seminar: 'Symmetry TFTs for Continuous Spacetime Symmetries'
DESCRIPTION:Title: Symmetry TFTs for Continuous Spacetime Symmetries \nSpeaker: Iñaki Garcia Etxebarria (Durham U.) \nVenue & Time: Red Room / 3:00 PM \nAbstract: I will discuss our recent proposal for the Symmetry Topological Field Theory (SymTFT) for global\, continuous spacetime symmetries ( https://arxiv.org/abs/2509.07965 ). For a d-dimensional theory\, it is given by a (d + 1)-dimensional BF-theory for the spacetime symmetry group\, and whenever d is even\, it includes also Chern-Simons couplings\, that encode conformal and gravitational anomalies. This proposal is supported by the similarity to two- dimensional Jackiw-Teitelboim gravity in the d = 1 case and the topological limit of four-dimensional gravity in the d = 3 case. I will discuss how topological defects constructed from this SymTFT act by applying the associated spacetime symmetry transformation. Finally\, I will discuss the relation to gravity and holography.
URL:https://www.ift.uam-csic.es/event/seminar-by-inaki-garcia-etxebarria/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260420T150000
DTEND;TZID=Europe/Madrid:20260420T150000
DTSTAMP:20260714T154701
CREATED:20251128T155230Z
LAST-MODIFIED:20260420T101759Z
UID:23977-1776697200-1776697200@www.ift.uam-csic.es
SUMMARY:Seminar by Isaac Tutusaus (ICE\, Barcelona)
DESCRIPTION:Title: Probe combination to constrain cosmology in Euclid \nSpeaker: Isaac Tutusaus (ICE\, Barcelona) \nVenue&Time: Red Room / 15:00 \nAbstract: Following its successful launch in July 2023 and the start of its scientific survey in February 2024\, Euclid has become the first stage-IV photometric survey in operations. In addition to its photometric observations\, Euclid is also conducting a spectroscopic survey\, which allows us to add even more probes to a combined analysis from Euclid data alone. In this talk I will present the forecasts for a combined analysis at the end of the mission\, focusing in particular on how combining multiple probes helps break parameter degeneracies and leads to tighter constraints on the cosmological model under investigation. I will conclude by outlining current efforts toward a combined analysis with Euclid’s first data release.
URL:https://www.ift.uam-csic.es/event/seminar-by-isaac-tutusaus-ice-barcelona/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260421T140000
DTEND;TZID=Europe/Madrid:20260421T150000
DTSTAMP:20260714T154701
CREATED:20260406T091546Z
LAST-MODIFIED:20260406T091546Z
UID:24816-1776780000-1776783600@www.ift.uam-csic.es
SUMMARY:Cosmology Journal Club
DESCRIPTION:Every Tuesday at 2:00 PM in the discussion room on the 5th floor. \nJoin the IFT cosmology/gravity journal club at benty-fields.com to vote for papers and volunteer to present them
URL:https://www.ift.uam-csic.es/event/cosmology-journal-club-22/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260422T113000
DTEND;TZID=Europe/Madrid:20260422T123000
DTSTAMP:20260714T154701
CREATED:20260420T064701Z
LAST-MODIFIED:20260420T064701Z
UID:24923-1776857400-1776861000@www.ift.uam-csic.es
SUMMARY:Quantum Information Journal Club: 'The Quantum Agreement Theorem'
DESCRIPTION:Title: The Quantum Agreement Theorem\n\nSpeaker: María García (upm)\n\nVenue&Time: Gray Room 3 / 11:30\n\nAbstract: We formulate and prove an Agreement Theorem for quantummechanics (QM)\, describing when two\nagents\, represented by separate laboratories\, can or cannot maintain differing probability estimates of\na shared quantum property of interest. Building on the classical framework (Aumann\, 1976)\, we define\nthe modality of “common certainty” through a hierarchy of certainty operators acting on each agent’s\nHilbert space. In the commuting case – when all measurements and event projectors commute – common\ncertainty leads to equality of the agents’ conditional probabilities\, recovering a QM analog of the classical\ntheorem. By contrast\, when non-commuting operators are allowed\, the certainty recursion can stabilize\nwith different probabilities. This yields common certainty of disagreement (CCD) as a distinctive QM\nphenomenon. Agreement is restored once measurement outcomes are recorded in a classical register. The\nclassical Agreement Theorem can therefore be seen as emergent from the quantum world via recording.\nWe establish an impossibility result stating that QM forbids a scenario where one agent is certain that\na property of interest occurs\, and is also certain that the other agent is certain that the property does\nnot occur. In this sense\, QM admits non-classical disagreement\, but disagreement is still bounded in a\ndisciplined way. We argue that our analysis offers a rigorous approach to the longstanding issue of how\nto understand intersubjectivity across agents in QM.
URL:https://www.ift.uam-csic.es/event/quantum-information-journal-club-the-quantum-agreement-theorem/
LOCATION:Gray Room 3\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260422T113000
DTEND;TZID=Europe/Madrid:20260422T163000
DTSTAMP:20260714T154701
CREATED:20260413T114758Z
LAST-MODIFIED:20260419T204443Z
UID:24889-1776857400-1776875400@www.ift.uam-csic.es
SUMMARY:Madrid's Polygonal Gravity Seminar Series
DESCRIPTION:Venue&Time: Red Room / 11:30 / 15:00 \nPROGRAM: \n——————— \n11:00 Welcome coffee \n——————— \n11:30h     First Talk \nSpeaker: Jelle Hartong (Edinburgh U.) \nTitle: The Geometry of Gravitational Radiation \nAbstract: This talk concerns asymptotically flat vacuum solutions of GR in\n4 spacetime dimensions. The asymptotics of such metrics is quite intricate\nand depends on how we approach infinity. If we follow null geodesics we\nend up at future null infinity. This is where massless fields\, including\ngravitational radiation ends up. In this talk we will study the metric\nnear future null infinity with an emphasis on geometrical structures that\nemerge in that part of the spacetime. \nFuture null infinity of an asymptotically flat spacetime is a conformal\nCarroll manifold. I will not assume any familiarity with Carroll geometry\nand explain the relevant geometrical notions as we go along. We will\nconsider asymptotic solutions to the 4D vacuum Einstein equations where\nfuture null infinity is endowed with the most general Carroll metric data\nthat is allowed by the Einstein equations. This can be used to define an\nenergy-momentum tensor (EMT) at future null infinity by varying a suitably\nrenormalised action with respect to the boundary Carroll metric data. It\nis shown that the Ward identities obeyed by this boundary EMT agree with\nthe Bondi loss equations that describe the loss of energy and momentum due\nto the emission of gravitational waves. The metric near future null\ninfinity can be formulated in terms of a Cartan geometry based on the\nconformal Carroll algebra. The non-vanishing curvatures of said algebra\ndictate how radiative the spacetime is. For example\, the vacuum degeneracy\nis described by a flat conformal Carroll connection. We will see that the\nBondi loss equations can be rewritten as flux-balance laws where the\nfluxes are determined by the Cartan geometry for the conformal Carroll\nalgebra. \n——————– \n15:00h     Second Talk \nSpeaker: Eric A. Bergshoeff (U. of Groningen) \nTitle: Massive gravity in the lab \nAbstract: In this talk I will discuss a connection between the so-called\nchiral massive GMP spin-2 mode in the Fractional Quantum Hall effect and a\nthree-dimensional (one time and two space) relativistic massive spin-2\nfield in quantum field theory. In particular\, I will show how the spin-2\nGMP mode follows by taking a special non-relativistic limit of linearized\nthree-dimensional massive gravity which are the planar Fierz-Pauli\nequations. I will discuss how these results can be generalized to integer\nhigher-spins and will present results for half-integer spins as well. \n——————– \n16:15  Farewell coffee \n—————————————————————————– \nMore information about these and following monthly seminars can be found at the\nwebpage \nhttps://sites.google.com/view/polygrav \nWe very much hope to see you there! (No registration is needed) \nFernando Barbero (IEM)\, Guillermo Mena (IEM)\, Luis Garay (UCM)\,\nMercedes Martin-Benito (UCM)\, Daniele Oriti (UCM)\, Tomas Ortin(IFT)\, Francesca\nVidotto (IEM)\, Eduardo Villaseñor (UC3M)
URL:https://www.ift.uam-csic.es/event/madrids-polygonal-gravity-seminar-series-2/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260423T120000
DTEND;TZID=Europe/Madrid:20260423T130000
DTSTAMP:20260714T154701
CREATED:20260420T064053Z
LAST-MODIFIED:20260420T064053Z
UID:24919-1776945600-1776949200@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'Tensionless String Limits in AdS5/CFT4 and the Sharpened Distance Conjecture'
DESCRIPTION:Strings\, Pheno and the Swampland (SPS) Journal Club. Every Thursday at 12:00 in the Red Room. \n\n\nTitle: Tensionless String Limits in AdS5/CFT4 and the Sharpened Distance Conjecture\n\nSpeaker: Gabriel Fenati (IFT)\n\nVenue&Time: Red Room / 12:00\n\nAbstract: Based on work in progress with M. Montero and I. Valenzuela. We extend the results of [2410.07309] by showing that all 4d Lagrangian SCFTs satisfy the bound of the Sharpened Distance Conjecture in the large N limit.  We also provide an example of a quiver SCFT\, dual to a stringy AdS background\, where the bound is violated by taking a different kind of semi-classical limit\, in which the number of gauge factors is taken to be large at fixed N.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-tensionless-string-limits-in-ads5-cft4-and-the-sharpened-distance-conjecture/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260423T120000
DTEND;TZID=Europe/Madrid:20260423T130000
DTSTAMP:20260714T154701
CREATED:20260420T064342Z
LAST-MODIFIED:20260420T064342Z
UID:24920-1776945600-1776949200@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club: 'Infinite Heat Order in 3+1 Dimensions'
DESCRIPTION:Samuel Rosende (IFT) will present “Infinite Heat Order in 3+1 Dimensions”\n\nVenue&Time: Gray Room 2 / 12:00\n\nAbstract:\n\nWe investigate whether spontaneous symmetry breaking can persist up to arbitrarily high temperature in ultraviolet-complete quantum field theories in four spacetime dimensions. We focus on completely asymptotically free models with gauge group SU(Nc1)×SU(Nc2) and two complex scalar fields\, each transforming in the fundamental representation of one gauge factor and singlet under the other. The scalar potential contains quartic self-interactions together with a negative portal coupling between the two sectors. In the Veneziano limit\, this class of theories was previously shown to admit fixed-flow trajectories for which one scalar acquires a negative thermal mass at asymptotically large temperature\, leading to symmetry non-restoration. Here we extend that analysis to finite numbers of colours and flavours. We derive the finite-N fixed-flow equations\, compute the leading 1/N corrections to the large-N solutions\, and solve the full finite-N system numerically. We find explicit finite-N benchmark theories for which the scalar potential remains bounded from below\, the gauge sector is asymptotically free\, and one scalar thermal mass stays negative at arbitrarily high temperature. This provides an explicit perturbative example of infinite heat order in a four-dimensional ultraviolet-complete quantum field theory with a finite field content.
URL:https://www.ift.uam-csic.es/event/phenojc-infinite-heat-order-3-1-dimensions/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260423T150000
DTEND;TZID=Europe/Madrid:20260423T160000
DTSTAMP:20260714T154702
CREATED:20260321T095735Z
LAST-MODIFIED:20260420T102552Z
UID:24651-1776956400-1776960000@www.ift.uam-csic.es
SUMMARY:Seminar by Maria Olalla Olea Romacho (King's College\, London)
DESCRIPTION:Title: ‘Traces from Primordial Magnetogenesis’ \n  \nSpeaker: Maria Olalla Olea Romacho (King’s College\, London) \n  \nVenue&Time: Red Room / 15:00 \n\nAbstract: Magnetic fields permeate the Universe across a wide range of scales\, from galaxies and clusters to the most underdense regions of the cosmic web. Gamma-ray observations of TeV blazars suggest the presence of magnetic fields in intergalactic voids\, where no efficient late-time astrophysical sources exist\, pointing toward a possible primordial origin and a direct link to early-Universe physics. Primordial magnetic fields arise naturally in scenarios such as inflation or cosmological phase transitions. In this seminar\, I present a multi-messenger perspective on their observational signatures. On the particle physics side\, I discuss collider-motivated models of electroweak phase transitions\, highlighting connections to blazar observations and stochastic gravitational-wave backgrounds. On the astrophysical side\, I show how primordial magnetic fields enhance small-scale structure formation\, leading to dense dark matter minihalos that boost indirect detection signals\, and how they impact high-redshift observables probed by the James Webb Space Telescope.
URL:https://www.ift.uam-csic.es/event/seminar-by-maria-olalla-olea-romacho-kings-college-london/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260427T150000
DTEND;TZID=Europe/Madrid:20260427T160000
DTSTAMP:20260714T154702
CREATED:20260129T125809Z
LAST-MODIFIED:20260423T153319Z
UID:24310-1777302000-1777305600@www.ift.uam-csic.es
SUMMARY:Seminar: 'Collective vortex dynamics in strongly coupled superfluids'
DESCRIPTION:Title: Collective vortex dynamics in strongly coupled superfluids \nSpeaker: Mikel Sanchez-Garitaonandia (University College Dublin) \nVenue&Time: Red Room / 15:00 \n\nAbstract: Vorticity appears across a wide range of fluid phenomena\, from the dynamics of classical fluids to quantum vortices in superfluids. In the latter case\, vortices are topological defects that interact both with each other and with the surrounding medium. When a large number of vortices are present\, it is natural to ask whether their collective behaviour can itself be described as a fluid\, captured by an effective theory of vortex hydrodynamics. In this talk\, I will explore the dynamics of many vortices in a strongly coupled superfluid with holography. By performing real-time simulations\, I will investigate how the system approaches equilibrium and how its macroscopic behaviour compares with the predictions of vortex hydrodynamics. This allows to assess the range of validity of the hydrodynamic description and to understand how the system behaves beyond it.
URL:https://www.ift.uam-csic.es/event/ift-seminar-mikel-sanchez-garitaonandia/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260428T113000
DTEND;TZID=Europe/Madrid:20260428T123000
DTSTAMP:20260714T154702
CREATED:20260423T115954Z
LAST-MODIFIED:20260423T115954Z
UID:24938-1777375800-1777379400@www.ift.uam-csic.es
SUMMARY:Holo Club: (Quantum) evolution of de Sitter black holes
DESCRIPTION:Speaker: Muktajyoti Saha (ICTS-TIFR\, Bengaluru) \nTitle: (Quantum) evolution of de Sitter black holes \nVenue & Time: Blue Room / 11:30 \nAbstract: \nI will discuss the evolution of charged black holes in asymptotically\nde Sitter spacetime. These black holes evolve towards a thermal\nequilibrium with the cosmological horizon. At very low temperatures\ni.e. close to extremality\, the semiclassical thermal description of\nthese black holes break down and quantum gravitational effects\ndominate. Such quantum corrections can be effectively described in\nterms of boundary Schwarzian modes localized at the edge of the large\nnear-horizon throat of these black holes. I will discuss how this\nnear-horizon effective theory changes the evolution of the black holes. \narXiv:2510.18035
URL:https://www.ift.uam-csic.es/event/holo-club-quantum-evolution-of-de-sitter-black-holes/
LOCATION:Blue Room\, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260428T140000
DTEND;TZID=Europe/Madrid:20260428T150000
DTSTAMP:20260714T154702
CREATED:20260406T091645Z
LAST-MODIFIED:20260406T091645Z
UID:24817-1777384800-1777388400@www.ift.uam-csic.es
SUMMARY:Cosmology Journal Club
DESCRIPTION:Every Tuesday at 2:00 PM in the discussion room on the 5th floor. \nJoin the IFT cosmology/gravity journal club at benty-fields.com to vote for papers and volunteer to present them
URL:https://www.ift.uam-csic.es/event/cosmology-journal-club-23/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260430T120000
DTEND;TZID=Europe/Madrid:20260430T130000
DTSTAMP:20260714T154702
CREATED:20260427T064609Z
LAST-MODIFIED:20260427T064609Z
UID:24950-1777550400-1777554000@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'Regge trajectories for UV completions of graviton scattering from polynomial boundedness'
DESCRIPTION:Strings\, Pheno and the Swampland (SPS) Journal Club. Every Thursday at 12:00 in the Red Room. \nBruno Bento (IFT) will present: ‘Regge trajectories for UV completions of graviton scattering from polynomial boundedness’\n\nVenue & Time: Red Room / 12:00\n\nAbstract: We study graviton scattering amplitudes. Assuming they are UV completed by a theory of weakly coupled massive higher spins\, we demonstrate that the UV completion must possess infinitely many Regge trajectories\, and thus they are forced to have a stringy spectrum. We extend and simplify a previous proof by some of us for open-string like states to the case of external gravitons. In the present new proof\, we trace the need for infinitely many trajectories to the constraint of polynomial boundedness\, ultimately tied to causality. We further present numerical results based on the stringy ansatz of Häring-Zhiboedov\, which illustrates how single-trajectory-like solutions actually emerge as extremal solutions of numerical bootstrap. In our numerics\, these trajectories curiously show up as numerically very large \textit{sister} trajectories. We provide solid evidence that the solutions are spurious as they appear to admit a divergent limit for infinite ansatz size.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-regge-trajectories-for-uv-completions-of-graviton-scattering-from-polynomial-boundedness/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260430T120000
DTEND;TZID=Europe/Madrid:20260430T130000
DTSTAMP:20260714T154702
CREATED:20260427T064950Z
LAST-MODIFIED:20260427T064950Z
UID:24952-1777550400-1777554000@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club
DESCRIPTION:Every Thursday at 12:00 in Grey Room 2.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-12/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260430T150000
DTEND;TZID=Europe/Madrid:20260430T160000
DTSTAMP:20260714T154702
CREATED:20260310T094240Z
LAST-MODIFIED:20260427T064858Z
UID:24572-1777561200-1777564800@www.ift.uam-csic.es
SUMMARY:Seminar: 'Quantum computing for lattice gauge theories: from the Schwinger model to an SO(3) Quantum Link model'
DESCRIPTION:Title: Quantum computing for lattice gauge theories: from the Schwinger model to an SO(3) Quantum Link model \nSpeaker: Bipasha Chakraborty (University of Southampton) \nVenue&Time: Red Room / 15:00 \nAbstract: Quantum computing provides a promising framework for simulating strongly coupled gauge theories relevant to high-energy physics. In this talk\, I will discuss quantum simulations of lattice gauge theories\, focusing on the Schwinger model as a benchmark Abelian system and on a non-Abelian SO(3) gauge theory formulated as a quantum link model. I will outline gauge-invariant encodings and circuit implementations suitable for near-term devices\, and comment on prospects for using quantum algorithms to study real-time dynamics and other regimes challenging for classical methods.
URL:https://www.ift.uam-csic.es/event/seminar-bipasha-chakraborty/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260504T150000
DTEND;TZID=Europe/Madrid:20260504T160000
DTSTAMP:20260714T154702
CREATED:20260129T125910Z
LAST-MODIFIED:20260504T081933Z
UID:24312-1777906800-1777910400@www.ift.uam-csic.es
SUMMARY:Seminar: 'Gravitational waves from phase transitions in the early Universe: sound waves and MHD turbulence'
DESCRIPTION:Title: Gravitational waves from phase transitions in the early Universe: sound waves and MHD turbulence \nSpeaker: Alberto Roper Pol (Geneva) \nVenue&Time: Red Room / 15:00 \nAbstract:  Gravitational waves (GWs) can be produced by a first-order phase transition in the early Universe via the fluid perturbations induced in the primordial plasma by the expansion and collision of broken-phase bubbles. I will review the production of GWs by the anisotropic stresses of velocity and magnetic fields induced in a first-order phase transition and present recent developments on the analytical estimates and numerical simulations that address the stochastic GW background produced by acoustic motion (sound waves) and magnetohydrodynamic (MHD) turbulence. These GWs could be detectable by current and future GW detectors like LISA or PTA\, potentially providing us with direct clean information of the physics at the high energies of the early Universe and probing beyond the Standard Model physics. In addition\, the presence of magnetic fields at a phase transition leads to coupled non-linear fluid perturbations\, described by MHD turbulence\, that will impact the cosmological GW background. The study of these effects can be used to put constraints on primordial magnetic fields. These fields would evolve until present time and leave observable imprints in\, for example\, the CMB and in the cosmic voids of the large-scale structure of the Universe\, allowing us to combine GW observations with other cosmological and astrophysical observations in a multi-messenger approach.
URL:https://www.ift.uam-csic.es/event/ift-seminar-alberto-roper-pol-geneva/
LOCATION:IFT Seminar Room/Red Room\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260505T110000
DTEND;TZID=Europe/Madrid:20260505T120000
DTSTAMP:20260714T154702
CREATED:20260504T101730Z
LAST-MODIFIED:20260504T101730Z
UID:24981-1777978800-1777982400@www.ift.uam-csic.es
SUMMARY:ML-AI Journal Club: 'Machine Learning in Astroparticle Physics'
DESCRIPTION:Title: ‘Machine Learning in Astroparticle Physics’ \nSpeaker: Daniel Nieto Castaño (IPARCOS/UCM) \nVenue&Time: Gray Room 2 / 11:00 \nAbstract: This seminar presents the motivation for employing machine\nlearning (ML) techniques to mitigate some experimental limitations\nwithin the field of astroparticle physics. We will briefly review\nselected applications across various detection domains\, specifically\naddressing astrophysical neutrinos\, cosmic rays\, and dark matter\ncandidates. Particular emphasis will be placed upon the analysis of\nvery-high-energy gamma-rays\, illustrating how these ML frameworks are\nincreasingly integral to advancing current observational capabilities.
URL:https://www.ift.uam-csic.es/event/ml-ai-journal-club-machine-learning-in-astroparticle-physics/
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260505T113000
DTEND;TZID=Europe/Madrid:20260505T130000
DTSTAMP:20260714T154702
CREATED:20260423T152851Z
LAST-MODIFIED:20260423T153018Z
UID:24936-1777980600-1777986000@www.ift.uam-csic.es
SUMMARY:Holo Club: Holographic transport in anisotropic systems
DESCRIPTION:Title: Holographic transport in anisotropic systems \nSpeaker: Claire Moran (Utrecht University) \nVenue&Time: Blue Room & Zoom / 11:30 \nAbstract: \nUnderstanding transport in strongly coupled quantum systems remains a\ncentral challenge across high-energy physics\, condensed matter\, and\nquantum many-body theory. Of particular interest is systems exhibiting\nanisotropy\, where the anisotropy leads to a much richer transport\nstructure\, with new transport coefficients emerging. The bulk\nviscosity becomes especially subtle in anisotropic media\, where it can\ncouple nontrivially to directional degrees of freedom and underlying\nmicroscopic structure. \nIn this talk\, I will discuss a recently developed holographic method\nfor computing the bulk viscosity in such systems. This approach\ncircumvents technical obstacles present in existing treatments and\nyields analytic expressions. I will discuss the general structure of\nthe method\, and highlight some applications of it. \nJoin Zoom Meeting \nhttps://us02web.zoom.us/j/86014678323?pwd=5zJvboElv4bYFZpjb8P3GMZzqCHCMA.1 \nMeeting ID: 860 1467 8323 \nPasscode: 406116
URL:https://www.ift.uam-csic.es/event/holo-club-holographic-transport-in-anisotropic-systems/
LOCATION:Blue Room\, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260505T140000
DTEND;TZID=Europe/Madrid:20260505T150000
DTSTAMP:20260714T154702
CREATED:20260406T091722Z
LAST-MODIFIED:20260406T091722Z
UID:24818-1777989600-1777993200@www.ift.uam-csic.es
SUMMARY:Cosmology Journal Club
DESCRIPTION:Every Tuesday at 2:00 PM in the discussion room on the 5th floor. \nJoin the IFT cosmology/gravity journal club at benty-fields.com to vote for papers and volunteer to present them
URL:https://www.ift.uam-csic.es/event/cosmology-journal-club-24/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260506T110000
DTEND;TZID=Europe/Madrid:20260506T120000
DTSTAMP:20260714T154702
CREATED:20260429T082932Z
LAST-MODIFIED:20260429T083036Z
UID:24957-1778065200-1778068800@www.ift.uam-csic.es
SUMMARY:Seminar: 'Are string vacua connected?' by Ashoke Sen (ICTS-Infosys)
DESCRIPTION:Title: ‘Are string vacua connected?’\n\nSpeaker: Ashoke Sen (ICTS-Infosys)\n\nVenue&Time: 11:00 / Blue Room\n\nAbstract: String theory has many vacua. We shall examine the question of whether these vacua are connected from an experimentalist’s perspective.\n\nAshoke Sen is the ICTS-Infosys Madhava Chair Professor at the International Centre for Theoretical Sciences\, Bengaluru.\nHis major honours include the ICTP Dirac Medal (2014)\, Breakthrough Prize in Fundamental Physics (2012)\, and the Infosys Prize in Mathematical Sciences (2009). He has also received the Padma Bhushan (2013) and the Padma Shri (2001)\, and is a Fellow of the Royal Society.
URL:https://www.ift.uam-csic.es/event/seminar-are-string-vacua-connected-by-ashoke-sen-icts-infosys/
LOCATION:Blue Room\, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260506T113000
DTEND;TZID=Europe/Madrid:20260506T123000
DTSTAMP:20260714T154702
CREATED:20260504T074101Z
LAST-MODIFIED:20260504T074101Z
UID:24970-1778067000-1778070600@www.ift.uam-csic.es
SUMMARY:Quantum Information Journal Club: "Symmetry-protected topology and deconfined solitons in a multi-link Z2 gauge theory"
DESCRIPTION:Speaker: Enrico Calogero Domanti\n\nTitle: “Symmetry-protected topology and deconfined solitons in a multi-link Z2 gauge theory”\n\nVenue&Time: Gray Room 3 / 11:30\n\nAbstract: With the advent of quantum simulators\, exploring exotic collective phenomena in lattice models with local symmetries and unconventional geometries is at reach of near-term experiments. Motivated by recent progress in this direction\, we study a Z2 lattice gauge theory defined on a multi-graph with links that host Z2 gauge fields. Elementary Wilson loops along pairs of these bonds allow to identify a dynamical gauge-invariant flux\, responsible for Aharonov-Bohm-like interference effects in the tunneling dynamics of charged matter residing on the vertices. We find inhomogeneous phases in which an ordered pattern of the gauge fluxes spontaneously breaks translational invariance. For an even number of links\, this is caused by a phenomenon of dynamical Aharonov-Bohm caging\, in which particles get trapped into portions of the lattice due to destructive interference. On the other hand\, an odd number of links realizes a phenomenon analogous to the Peiels instability. In this case\, long-range order is shown to coexist with symmetry protected topological order\, which survives the quantum fluctuations of the gauge flux induced by an external electric field. Doping the system above half filling leads to the formation of topological soliton/anti-soliton pairs interpolating between different inhomogeneous orderings of the gauge fluxes. Quasiparticles carrying fractional charge and bound at the soliton centers emerge as deconfined degrees of freedom\, as they can be arbitrarily separated without feeling a confining force\, in spite of the long-range attractive interactions set by the small electric field on the individual integer charges.
URL:https://www.ift.uam-csic.es/event/quantum-information-journal-club-symmetry-protected-topology-and-deconfined-solitons-in-a-multi-link-z2-gauge-theory/
LOCATION:Gray Room 3\, Instituto de Física Teórica (IFT) -C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T113000
DTEND;TZID=Europe/Madrid:20260507T123000
DTSTAMP:20260714T154702
CREATED:20260504T073228Z
LAST-MODIFIED:20260504T073228Z
UID:24966-1778153400-1778157000@www.ift.uam-csic.es
SUMMARY:Shannon's Corner Journal Club: "Zeros of the partition function and their algorithmic application"
DESCRIPTION:Speaker: Aram Harrow (MIT) \nTitle: “Zeros of the partition function and their algorithmic application” \nVenue&Time: Gray Room 1 / 11:30 \nAbstract: “At high temperatures quantum systems generally lose\nlong-range order.  We would expect that this makes them easier to\nsimulate.  One way to understand this is through the analytic\nproperties of the partition function.  Viewing Z(beta) = tr e^{-beta\nH} as a function of a complex beta\, its zeros turn out to tell us both\nabout phase transitions and about classical algorithms for estimating\nZ(beta).”
URL:https://www.ift.uam-csic.es/event/shannons-corner-journal-club-zeros-of-the-partition-function-and-their-algorithmic-application/
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T113000
DTEND;TZID=Europe/Madrid:20260507T123000
DTSTAMP:20260714T154702
CREATED:20260504T073526Z
LAST-MODIFIED:20260504T075639Z
UID:24968-1778153400-1778157000@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'Calibration\, fuzziness: new results on AdS vacuum decay'
DESCRIPTION:Strings\, Pheno and the Swampland (SPS) Journal Club \n  \nSpeaker: Vincent Menet (Università Milano Bicocca) \n\n  \nTitle: ‘Calibration\, fuzziness: new results on AdS vacuum decay’\n  \nVenue&Time: Red Room / 11:30 \n\n  \nAbstract: Motivated by swampland conjectures\, we study the stability of AdS type II supergravity vacua. In the literature\, vacuum decay mediated by abelian D-branes has been discussed extensively\, while this isn’t quite the case for both the D-brane bound states\, and their non-abelian counterparts. In this context\, we first present a tool to study large classes of D-branes and bound states\, based on calibration theory\, and then discuss vacuum decay mediated by weakly non-abelian D-branes. We illustrate our results by applying them to a few concrete AdS vacua.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-calibration-fuzziness-new-results-on-ads-vacuum-decay/
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
END:VCALENDAR