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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
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DTSTART:20240331T010000
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DTSTART:20241027T010000
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DTSTART:20250330T010000
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DTSTART:20251026T010000
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DTSTART:20260329T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20251124T150000
DTEND;TZID=Europe/Madrid:20251124T160000
DTSTAMP:20260719T162304
CREATED:20251029T112558Z
LAST-MODIFIED:20251125T081536Z
UID:23516-1763996400-1764000000@www.ift.uam-csic.es
SUMMARY:Seminar: 'Gravitational Lensing of Waves: a new window into cosmology and fundamental physics'
DESCRIPTION:Speaker: Miguel Zumalacárregui from Max Planck Institute for Gravitational Physics (Albert Einstein Institute). \nVenue&Time: Red Room / 3:00 PM \nAbstract: Gravitational lensing\, the bending of light by gravity\, is essential for interpreting astronomical observations and provides key insight into astrophysics\, cosmology\, and fundamental physics. A new frontier in gravitational lensing intersects with another key prediction of Einstein’s theory: gravitational waves\, fluctuations of space-time produced by the collision of black holes and neutron stars. Like light\, gravitational waves are deflected and magnified by the intervening matter distribution\, but their unique properties (low frequency\, lack of absorption and ab-initio emission models) enable novel signatures and applications. I will present the phenomenology of lensed gravitational waves and the science they will deliver to identify high-redshift sources and probe dark-matter and new gravitational fields. As guiding example I will focus on GW231123: the first compelling lensed black hole merger candidate\, its interpretation and consequences.
URL:https://www.ift.uam-csic.es/event/seminar-by-miguel-zumalacarregui/
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20251120T150000
DTEND;TZID=Europe/Madrid:20251120T160000
DTSTAMP:20260719T162304
CREATED:20251003T100315Z
LAST-MODIFIED:20260324T094549Z
UID:23229-1763650800-1763654400@www.ift.uam-csic.es
SUMMARY:Seminar: 'Classical constant electric fields and the Schwinger effect in de Sitter'
DESCRIPTION:Speaker: Roberto Vega-Morales \nVenue&Time: Red Room / 15:00 \nAbstract: In this talk I will discuss constant classical electric fields and the Schwinger effect in de Sitter space\, which has potential implications for magnetogenesis and inflationary dark matter production. I will first go through the conditions for sustaining a constant electric field in de Sitter space before reviewing the calculation of the Schwinger current\, pointing out puzzling results in previous calculations found in the literature and how we have resolved them. I will then comment on current and future directions related to this topic. This talk is based on arXiv:2508.14973. \nSeminar related to the I+D+i project whose reference is CEX2020-001007-S\, funded by MCIN/AEI/10.13039/501100011033. The topic is framed within the following research line: Origin and composition of the universe: Astroparticles and Cosmology (Astro/Cosmo).
URL:https://www.ift.uam-csic.es/event/seminar-by-roberto-vega-morales-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:20251119T113000
DTEND;TZID=Europe/Madrid:20251119T130000
DTSTAMP:20260719T162304
CREATED:20251029T141050Z
LAST-MODIFIED:20251218T085419Z
UID:23520-1763551800-1763557200@www.ift.uam-csic.es
SUMMARY:Seminar: Average-case quantum complexity from glassiness
DESCRIPTION:Speaker: Alexander Zlokapa (MIT) \nVenue & Time: Red Room / 11:30 \nAbstract: In the classical setting\, glassiness characterizes many natural problems (e.g.\, random k-SAT) and underlies average-case hardness by obstructing a family of “stable” classical algorithms (e.g.\, constant-time Langevin dynamics). In this work\, we develop analogous quantum results. Our techniques\, based on quantum optimal transport\, differ significantly from classical probabilistic approaches due to the sign problem in the absence of a known eigenbasis. We show that quantum glassiness obstructs stable quantum algorithms\, including constant-time Lindbladian dynamics (even when starting from the maximally mixed state). Using the replica trick\, we also find that random 3-local Pauli Hamiltonians are quantumly hard and give evidence that random k-local Hamiltonians are quantumly easy for sufficiently large constant k. This differs from the analogous classical (Ising\, glassy phase for all k) and fermionic (SYK\, never glassy for any k) k-local ensembles. (Talk based on arXiv:2510.08497.)
URL:https://www.ift.uam-csic.es/event/seminar-average-case-quantum-complexity-from-glassiness/
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:20251118T150000
DTEND;TZID=Europe/Madrid:20251118T160000
DTSTAMP:20260719T162304
CREATED:20251111T123530Z
LAST-MODIFIED:20251218T085419Z
UID:23708-1763478000-1763481600@www.ift.uam-csic.es
SUMMARY:Seminar: 'Quantum Field Theory\, an Overview'
DESCRIPTION:Speaker: Anthony Zee (Kavli Institute for Theoretical Physics and the Department of Physics\, University of California\, Santa Barbara\, CA\, USA) \nVenue & Time: Red Room / 3:00 PM \nAbstract: I give an overview and appreciation of quantum field theory\, the most precisely tested theory in physics. The talk is addressed to those without any knowledge of quantum field theory. It is based on my textbook Quantum Field Theory in a Nutshell and my semi-popular book Quantum Field Theory\, as Simply as Possible (both published by Princeton University Press.)
URL:https://www.ift.uam-csic.es/event/seminar-quantum-field-theory-an-overview/
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:20251113T150000
DTEND;TZID=Europe/Madrid:20251113T160000
DTSTAMP:20260719T162304
CREATED:20251111T094255Z
LAST-MODIFIED:20251218T085419Z
UID:23702-1763046000-1763049600@www.ift.uam-csic.es
SUMMARY:Seminar: 'BipoSH: Structured test bed for cosmic isotropy violation'
DESCRIPTION:Speaker: Tarun Souradeep (Raman Research Institute\, Bengaluru\, India) \nVenue & Time: Red Room / 3:00 PM \nAbstract: The Cosmological Principle\, a fundamental tenet of the ‘standard model of cosmology’\, predicates a statistically isotropic distribution of fluctuations in the measured cosmic microwave background (CMB) temperature and polarization sky maps. Enigmatic anomalies claimed in the WMAP and Planck CMB sky maps\, and some other recent observations\, could challenge the standard model. However\, these claims need to be cast in an objective mathematical framework and established with statistical rigor. Bayesian inference of the underlying covariance structure of random fields on the sphere in the Bipolar Spherical Harmonic (BipoSH) representation\, developed in our research program\, provides such a framework. We review some recent inferences drawn from Planck data and discuss the future prospects with proposed CMB observations.
URL:https://www.ift.uam-csic.es/event/seminar-by-tarun-souradeep-raman-research-institute-bengaluru-india/
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:20251105T150000
DTEND;TZID=Europe/Madrid:20251105T160000
DTSTAMP:20260719T162304
CREATED:20251029T142819Z
LAST-MODIFIED:20260320T093611Z
UID:23522-1762354800-1762358400@www.ift.uam-csic.es
SUMMARY:Machine Learning for Time-Domain Astrophysics
DESCRIPTION:Speaker: Alex Gagliano (IAIFI/MIT) \nVenue&Time: Blue Room / 3:00 PM \nAbstract: The time-evolving night sky is rich with variable stars\, supernovae\, and merging neutron stars. Wide-field imaging surveys that monitor this variability produce gappy\, multi-modal observations that demand scalable\, uncertainty-aware models for physical inference. In this talk\, I’ll survey my recent work in building machine learning methods for time-domain astrophysics\, with a focus on learning representations of our data for classification\, physical inference and the discovery of astrophysical anomalies. I’ll introduce Minuet\, a compact host-galaxy image encoder trained with diffusion modeling; and a mixture-of-experts model that fuses supernova light curves and spectra while preserving modality-specific information and yielding calibrated posteriors. I’ll conclude by outlining three areas at this intersection with the greatest potential to drive discovery in the coming years: better physical models\, scalable population studies\, and ML-guided survey optimization. \nThis seminar is related to the I+D+i project whose reference is CEX2020-001007-S\, funded by MCIN/AEI/10.13039/501100011033. The topic is framed within the following research line: Origin and composition of the universe: Astroparticles and Cosmology (Astro/Cosmo).
URL:https://www.ift.uam-csic.es/event/seminar-by-alex-gagliano-iaifi-mit/
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:20251104T170000
DTEND;TZID=Europe/Madrid:20251104T180000
DTSTAMP:20260719T162304
CREATED:20251103T154536Z
LAST-MODIFIED:20260116T121652Z
UID:23686-1762275600-1762279200@www.ift.uam-csic.es
SUMMARY:Towards spectral bounds in 6d N=(1\,0) supergravity
DESCRIPTION:Speaker: Seung-Joo \n  \nVenue & Time: Tuesday\, Nov. 4th / 17:00 \n  \nAbstract: In this talk we will discuss spectral bounds in 6-dimensional N=(1\,0) supergravity. Specifically\, considering F-theory vacua on generic base surfaces\, we will constrain the U(1) vector and the tensor sectors in turn\, to present explicit spectral bounds on the respective sectors. Speculations will also be made as to how the F-/string-theoretic bounds may possibly generalize to the EFT counterparts. This seminar is related to the I+D+i project whose reference is CEX2020-001007-S\, funded by MCIN/AEI/10.13039/501100011033. The topic is framed within the following research line: Strings and quantum gravity (Gravity/Strings).
URL:https://www.ift.uam-csic.es/event/towards-spectral-bounds-in-6d-n10-supergravity/
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:20251028T150000
DTEND;TZID=Europe/Madrid:20251028T160000
DTSTAMP:20260719T162304
CREATED:20251001T135113Z
LAST-MODIFIED:20251218T085637Z
UID:23144-1761663600-1761667200@www.ift.uam-csic.es
SUMMARY:Seminar: 'Entanglement asymmetry and spontaneously broken symmetries'
DESCRIPTION:Speaker: Eduardo García-Valdecasas (SISSA\, Trieste) \nVenue&Time: Red Room / 15:00 \nAbstract: Entanglement asymmetry is a relative entropy that faithfully measures the breaking of a symmetry in a subregion. We explore some applications in theories with spontaneously broken higher form symmetries. We will start with discrete abelian symmetries and then discuss continuous symmetries. We will be able to recover the Mermin-Wagner-Coleman theorem and refine it for the case of subregions.
URL:https://www.ift.uam-csic.es/event/seminar-by-eduardo-garcia-valdecasas/
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:20251016T153000
DTEND;TZID=Europe/Madrid:20251016T170000
DTSTAMP:20260719T162304
CREATED:20250817T091751Z
LAST-MODIFIED:20260120T104641Z
UID:21519-1760628600-1760634000@www.ift.uam-csic.es
SUMMARY:DIFT Colloquium: 'Gamma Ray Bursts\, Cosmic Rays and the Sociology of Science'
DESCRIPTION:Speaker: Álvaro de Rújula from IFT & CERN \n\n\n\nVenue & Time: Aula Polivalente UAM \nAbstract: \nGamma-Ray Bursts (GRBs) and Cosmic Rays (CRs) are not difficult to comprehend. Quasars and micro-quasars are seen to emit highly relativistic “Cannonballs” (CBs)\, though the underlying mechanism remains unfathomable. The observation that core-collapse supernovae also emit CBs —plus some trivial relativistic kinematics— provides a successful understanding of GRBs and CRs. The self-defined “official experts” on these fields resist the evidence\, in an explicitly inquisitorial way.\n\nThis colloquium is related to the I+D+i project whose reference is CEX2020-001007-S\, funded by MCIN/AEI/10.13039/501100011033. The topic is framed within the following research line: Origin and composition of the universe: Astroparticles and Cosmology (Astro/Cosmo).\n 
URL:https://www.ift.uam-csic.es/event/dift-colloquium/
LOCATION:AULA POLIVALENTE UAM\, Plaza Mayor Campus de Cantoblanco UAM. C. Einstein\, 7\, Fuencarral-El Pardo\, 28049 Madrid\, Madrid\, Madrid\, 28049\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20251009T150000
DTEND;TZID=Europe/Madrid:20251009T160000
DTSTAMP:20260719T162304
CREATED:20250817T090853Z
LAST-MODIFIED:20251218T085638Z
UID:21513-1760022000-1760025600@www.ift.uam-csic.es
SUMMARY:Large neutrino mass in cosmology and keV sterile neutrino dark matter from a dark sector
DESCRIPTION:Speaker: Thomas Schwetz from Karlsruhe Institute of Technology (KIT)\n\n\n\n\n\nVenue&Time: Red Room / 3:00 PM \n\nAbstract:\nRecent results from cosmology place sever upper bounds on the sum of neutrino masses\, starting to be in conflict with lower bounds from neutrino oscillations. If this neutrino tension persists\, it may indicate new physics in cosmology and/or neutrino physics. After a brief review of the present state\, I discuss a new physics scenario able to explain this tension. It is based on an extended seesaw model for neutrino mass\, including a number of massless neutrinos acting as dark radiation\, as well as a keV state as a dark matter candidate. The dark sector is brought into equilibrium with neutrinos between BBN and recombination. This scenario predicts a slight increase in the effective number of neutrino species Neff at recombination\, potentially detectable byfuture CMB missions.
URL:https://www.ift.uam-csic.es/event/seminar-thomas-schwetz/
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:20251003T100000
DTEND;TZID=Europe/Madrid:20251003T173000
DTSTAMP:20260719T162304
CREATED:20250922T035943Z
LAST-MODIFIED:20251218T085638Z
UID:22821-1759485600-1759512600@www.ift.uam-csic.es
SUMMARY:César Gómez (1954–2025): A rich life in theory
DESCRIPTION:Venue&Time: Blue Room / 10:20 – 17:30 \nMore info: workshops.ift.uam-csic.es/CesarGathering/ \nCésar Gómez\, whose profound contributions to gauge theory\, string theory and quantum gravity were matched by his vision and generosity\, passed away on 7 April 2025. After earning his PhD in Salamanca\, he held positions at Harvard\, the IAS and CERN before joining the CSIC in Madrid\, where he became a founding member of the Instituto de Física Teórica\, his true scientific home. \nHis career spanned key areas of theoretical physics: from the quantum vacuum in QCD and two-dimensional conformal field theory to holography\, black holes and the quantum structure of spacetime. In recent years he embarked on bold new ideas about symmetry breaking and the quantum origin of the universe\, entering one of his most creative periods when his life was cut short. \nBeyond his scientific achievements\, César was a gifted teacher\, an inspiring presence at seminars and a remarkable conversationalist. He leaves behind not only a lasting scientific legacy\, but also the memory of a colleague and friend who enriched every exchange with curiosity\, insight and humanity. \nThe meeting will be an opportunity to celebrate Cesar’s life and career through the personal recollections of some of his friends and collaborators. \nRead CERN’s obituary
URL:https://www.ift.uam-csic.es/event/cesar-gomez-1954-2025-a-rich-life-in-theory/
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:20251002T150000
DTEND;TZID=Europe/Madrid:20251002T160000
DTSTAMP:20260719T162304
CREATED:20250613T073446Z
LAST-MODIFIED:20251218T085638Z
UID:18492-1759417200-1759420800@www.ift.uam-csic.es
SUMMARY:Fast inference for slow likelihoods with probabilistic machine-learning
DESCRIPTION:Speaker: Jesús Torrado from IEM-CSIC\n\n\n\n\nVenue&Time: Red Room / 3:00 PM\n\n\n\nAbstract: Inference for slow likelihoods can require weeks or months\, if possible at all\, with traditional Monte Carlo samplers. This would be the case\, for example\, when fitting expensive non-linear matter spectrum models\, or when characterizing individual long-duration GW events. I will introduce a fast machine-learning Bayesian inference algorithm for general non-Gaussian posteriors with a moderate number of parameters. I will present a pedagogical discussion of some general aspects of it\, such as dealing with the curse of dimensionality\, characterizing a region of interest\, or parallelising active learning. I will show that the total number of expensive likelihood evaluations can be reduced by at least two orders of magnitude compared to traditional Monte Carlo methods\, at low overhead costs and no pre-training. I will demonstrate its performance on a couple of real cosmological and GW problems.
URL:https://www.ift.uam-csic.es/event/tba-4/
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:20250929T150000
DTEND;TZID=Europe/Madrid:20250929T160000
DTSTAMP:20260719T162304
CREATED:20250929T104149Z
LAST-MODIFIED:20251218T085638Z
UID:23129-1759158000-1759161600@www.ift.uam-csic.es
SUMMARY:Seminar by Roberto Vega-Morales
DESCRIPTION:Speaker: Roberto Vega-Morales from Granada U. \n\nVenue&Time: Red Room / 3:00 PM\n\nAbstract: TBA
URL:https://www.ift.uam-csic.es/event/seminar-by-roberto-vega-morales/
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:20250929T150000
DTEND;TZID=Europe/Madrid:20250929T160000
DTSTAMP:20260719T162304
CREATED:20250922T120108Z
LAST-MODIFIED:20251218T085639Z
UID:22876-1759158000-1759161600@www.ift.uam-csic.es
SUMMARY:Muon g-2: nuts and bolts and lattice QCD
DESCRIPTION:Speaker: Andreas Kronfeld (Fermilab) \nVenue&Time: Red Room / 3:00 PM \nAbstract: This seminar consists of two parts. First\, it is discussed how various approaches to the hadronic vacuum polarization (HVP) for the anomalous magnetic moment of the muon\, g-2\, are connected. Second\, results for the HVP from lattice QCD are presented\, focusing on the work of the Fermilab Lattice\, HPQCD\, and MILC collaborations.
URL:https://www.ift.uam-csic.es/event/muon-g-2-nuts-and-bolts-and-lattice-qcd/
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:20250929T090000
DTEND;TZID=Europe/Madrid:20251002T183000
DTSTAMP:20260719T162304
CREATED:20250922T115745Z
LAST-MODIFIED:20251218T085639Z
UID:22872-1759136400-1759429800@www.ift.uam-csic.es
SUMMARY:LHC Working Group on Forward Physics and Diffraction
DESCRIPTION:The September 29-October 2  2025 four-day workshop in Madrid of the LHC Physics Centre at CERN (LPCC) Forward Physics Working Group provides a forum at CERN for experimental collaborations and theorists to meet and exchange latest results across all topics of forward physics at the LHC. \nThe workshop will take place at the Institute of Theoretical Physics (Campus de Cantoblanco 28049 Madrid Spain) and we will be hosted by Prof. Agustin Sabio Vera. To come to IFT\, you can take Line C-4 (Colmenar Viejo or Alcobendas/San Sebastián de los Reyes)\, that takes you to the University (Cantoblanco-Universidad Station). You can pick it up in Atocha (main station in the Centre/South of Madrid)\, Nuevos Ministerios (Paseo de la Castellana) and Chamartín (main station in the North). After Chamartín\, the second station is Cantoblanco-Universidad\, where you should exit. \nMore info.
URL:https://www.ift.uam-csic.es/event/lhc-working-group-on-forward-physics-and-diffraction/
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:20250926T150000
DTEND;TZID=Europe/Madrid:20250926T160000
DTSTAMP:20260719T162304
CREATED:20250922T030252Z
LAST-MODIFIED:20251218T085639Z
UID:22793-1758898800-1758902400@www.ift.uam-csic.es
SUMMARY:Delta N formalism: non-linear evolution of scalar and tensor perturbations during inflation
DESCRIPTION:Speaker: Danilo Artigas\n\n\nInstitution: Kyoto University\n\n\nLocation&Place: IFT Seminar Room/Red Room\n\n\n\n\n\nAbstract:\n\n\nLinear-perturbation theory has proven to be an extremely powerful tool to compare inflationary models with observational data. Recently\, the newcoming high-precision observations call for predictions beyond linear perturbations. Such effects are known to be relevant for example in the production of primordial black holes or scalar-induced gravitational waves. The delta N formalism proposes to capture some of these non-linearities by describing the universe as a set of homogeneous patches evolving independently. After reviewing its formulation\, I will apply it to the case of a single scalar field following a slow-roll evolution\, briefly interrupted by a phase of ultra-slow roll where the potential is nearly flat. Taking care of the correlation of the patches\, I will show how to obtain correlation functions of scalar perturbations. As a final note\, I will briefly show how this procedure can also be applied to describe primordial gravitational waves.
URL:https://www.ift.uam-csic.es/event/delta-n-formalism-non-linear-evolution-of-scalar-and-tensor-perturbations-during-inflation/
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:20250926T113000
DTEND;TZID=Europe/Madrid:20250926T113000
DTSTAMP:20260719T162304
CREATED:20250922T115233Z
LAST-MODIFIED:20251218T085639Z
UID:22869-1758886200-1758886200@www.ift.uam-csic.es
SUMMARY:To bind or not to bind\, a tale of two nucleons
DESCRIPTION:Speaker: André Walker-Loud (LBNL) \nVenue&Time: Red Room / 11:30 AM \nAbstract: Our ability to understand the emergence of nuclear physics from the Standard Model requires an understanding two nucleon interactions from the underlying quark and gluon degrees of freedom. Due to the non-perturbative nature of QCD at low-energies\, the only method to provide such predictions\, with quantifiable uncertainties is lattice QCD. Yet the application of lattice QCD to the two-nucleon problem is beset by a number of significant challenges\, such that it has remained uncertain whether di-nucleon systems form bound states at pion masses heavier than nature. I will present recent work exploring this question with all varieties of methods in the literature\, including the HAL QCD potential method\, on a single set of gauge ensembles\, enabling for a direct comparison of the methods.
URL:https://www.ift.uam-csic.es/event/to-bind-or-not-to-bind-a-tale-of-two-nucleons/
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:20250925T150000
DTEND;TZID=Europe/Madrid:20250925T160000
DTSTAMP:20260719T162304
CREATED:20250613T073431Z
LAST-MODIFIED:20251218T085607Z
UID:18490-1758812400-1758816000@www.ift.uam-csic.es
SUMMARY:Stirring up the intracluster medium with substructures
DESCRIPTION:Speaker: Go Ogiya from Zhejiang University\n\n\n\nVenue&Time: Red Room / 3:00 PM\n\n\n\n\nAbstract: \nThe origin of the turbulent motion of the intracluster medium (ICM) has been a longstanding open question. Stirring by substructures (member galaxies and dark matter subhaloes) orbiting within a galaxy cluster is a possible mechanism to generate and maintain the ICM turbulence. We develop a semi-analytic model considering three processes of energy transfer from substructures to the ICM (dynamical friction\, ram pressure\, and sloshing)\, and propagation and dissipation of the deposited energy. The model reproduces the gas velocity structure derived from hydrodynamical simulations. We find that dynamical friction is responsible for explaining the strong turbulence (~ 500 km/s) in the cluster outskirts (> 1 Mpc)\, while sloshing explains the mild turbulence (~100 km/s) in the cluster centre. In the talk\, we will also discuss implications for X-ray observations of the new generation\, such as XRISM and eROSITA.
URL:https://www.ift.uam-csic.es/event/tbd/
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:20250924T150000
DTEND;TZID=Europe/Madrid:20250924T160000
DTSTAMP:20260719T162304
CREATED:20250922T064515Z
LAST-MODIFIED:20251218T085608Z
UID:22830-1758726000-1758729600@www.ift.uam-csic.es
SUMMARY:Kaluza-Klein Amplitudes in AdS: the Virasoro-Shapiro and the Veneziano Amplitudes
DESCRIPTION:Speaker: Bo Wang from Zhejiang U. Inst. Mod. Phys. \nVenue&Time: Red Room / 3:00 PM \nAbstract: \nI will report recent progress on AdS Virasoro-Shapiro and Veneziano amplitudes for half-BPS operators with arbitrary Kaluza-Klein modes. The key ingredient is a bootstrap built directly in the world-sheet representation\, together with a novel formalism. This approach yields a structural string description of AdS amplitude and a precise correspondence with correlators in N=4 SYM: at first curvature order we obtain a unique solution. I will also discuss the applications to broader holographic models beyond AdS5*S5.
URL:https://www.ift.uam-csic.es/event/kaluza-klein-amplitudes-in-ads-the-virasoro-shapiro-and-the-veneziano-amplitudes/
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20250922T150000
DTEND;TZID=Europe/Madrid:20250922T161500
DTSTAMP:20260719T162304
CREATED:20250613T073431Z
LAST-MODIFIED:20251218T085608Z
UID:18489-1758553200-1758557700@www.ift.uam-csic.es
SUMMARY:Vacuum stability for gravity compactifications
DESCRIPTION:Speaker: Alessandro Tomasiello (Milano Bicocca)\n\n\nVenue&Time: 15:00 / Red Room\n\n\nAbstract: Compactifying from higher dimensions typically produces many different vacuum solutions; this leads to multiple possible decay channels\, mediated by the nucleation of bubbles. In string theory\, the latter can be expanding D-branes. Supersymmetry provides a stabilization mechanism; I will describe how to replicate it for supersymmetry-breaking vacua\, with some partial success.
URL:https://www.ift.uam-csic.es/event/seminar-by-alessandro-tomasiello-milano-bicocca/
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:20250918T150000
DTEND;TZID=Europe/Madrid:20250918T160000
DTSTAMP:20260719T162304
CREATED:20250915T101421Z
LAST-MODIFIED:20251218T085608Z
UID:22598-1758207600-1758211200@www.ift.uam-csic.es
SUMMARY:Measuring Stochastic Gravitational Wave Backgrounds with Pulsar Timing Arrays
DESCRIPTION:Speaker: Mauro Pieroni\n\n\nInstitution: IEM-CSIC\n\n\nLocation&Place: Red Room\n\n\nAbstract:\n\n\nMy talk focuses on using Pulsar Timing Array (PTA) data to measure Gravitational Waves (GWs). In particular\, I will focus on Stochastic GW Background (SGWB) measurements. After a general introduction to the topic\, I will discuss a new (simplified) approach to constrain SGWBs with PTA data. This methodology significantly reduces the computational cost of the analysis\, opening up new avenues to explore the constraining power of PTA experiments. Within this framework\, I’ll revisit the constraints current and future PTA experiments can set on cosmological scenarios.
URL:https://www.ift.uam-csic.es/event/measuring-stochastic-gravitational-wave-backgrounds-with-pulsar-timing-arrays/
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:20250916T090000
DTEND;TZID=Europe/Madrid:20250919T170000
DTSTAMP:20260719T162304
CREATED:20250613T101430Z
LAST-MODIFIED:20251218T085608Z
UID:18592-1758013200-1758301200@www.ift.uam-csic.es
SUMMARY:Light Dark World 2025
DESCRIPTION:Light Dark World 2025 (LDW’25) is the tenth meeting of the annual Light Dark World International Forum\, which will take place between September 16 and September 19\, 2025\, at the Instituto de Física Teórica (IFT) in Madrid (Spain). The workshop will gather international specialists from both experimental and theoretical backgrounds in order to examine recent progress and create new avenues for investigating the existence of light particles beyond the Standard Model\, including light gauge bosons\, scalars\, dark matter\, axions\, sterile neutrinos\, and dark energy fields. \nRead more >>
URL:https://www.ift.uam-csic.es/event/light-dark-world-2025/
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:20250915T150000
DTEND;TZID=Europe/Madrid:20250915T160000
DTSTAMP:20260719T162304
CREATED:20250613T073431Z
LAST-MODIFIED:20251218T085608Z
UID:18487-1757948400-1757952000@www.ift.uam-csic.es
SUMMARY:Will we know the Neutrino Mass Ordering by the end of 2026?
DESCRIPTION:The JUNO reactor neutrino experiment has recently begun collecting data\, marking the start of a new precision era in neutrino research. With its unparalleled precision\, JUNO is poised to refine our understanding of most neutrino oscillation parameters. Its cornerstone measurement – the determination of the neutrino mass ordering — holds the promise of a breakthrough. In this talk we will explore the physics behind the two distinct ways JUNO data can be used to probe the mass ordering\, one of which could lead to the resolution of this fundamental question in the near future. Additionally\, we will examine the conditions necessary for such a discovery and address potential\ntheoretical caveats that could influence the interpretation of the outcome.
URL:https://www.ift.uam-csic.es/event/tba/
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:20250915T090000
DTEND;TZID=Europe/Madrid:20250919T200000
DTSTAMP:20260719T162304
CREATED:20250817T082107Z
LAST-MODIFIED:20251218T085608Z
UID:21489-1757926800-1758312000@www.ift.uam-csic.es
SUMMARY:Entangle This VI: 100 years of quantum
DESCRIPTION:As part of the International Year of Quantum Science and Technology\, the workshop Entangle This VI will bring together experts at the forefront of quantum theory and experiment. It is organized by the Quantum groups at IFT and IFF. \nRead more >>
URL:https://www.ift.uam-csic.es/event/entangle-this-vi-100-years-of-quantum/
LOCATION:Parque del Retiro\, Plaza Murillo\, 2\,\, Madrid\, 28014\,\, Spain
CATEGORIES:Scientific activities,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20250908T150000
DTEND;TZID=Europe/Madrid:20250908T160000
DTSTAMP:20260719T162304
CREATED:20250808T080907Z
LAST-MODIFIED:20251218T085608Z
UID:21482-1757343600-1757347200@www.ift.uam-csic.es
SUMMARY:Dark Matter Clues from the Faintest Galaxies
DESCRIPTION:Speaker: Julio Navarro\n\n\n\n\nInstitution: University of Victoria\n\n\n\n\nAbstract: Lambda Cold Dark Matter (LCDM) is the most successful theory for the formation of structure in the Universe. Although its predictions have been verified on large scales\, they are still contested on the scale of dwarf galaxies\, whose dynamical properties are often cited as evidence for the need to revise some of LCDM’s basic tenets. In this context\, I will discuss the recent discovery of the faintest galaxies known to date\, and how their properties may be used to place constraints on the clustering of dark matter on the smallest galactic and sub-galactic scales\, as well as on the viability of some of the proposed alternatives to LCDM.\n\n\n 
URL:https://www.ift.uam-csic.es/event/tbd-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:20250626T150000
DTEND;TZID=Europe/Madrid:20250626T161500
DTSTAMP:20260719T162304
CREATED:20250613T073431Z
LAST-MODIFIED:20251218T085608Z
UID:18486-1750950000-1750954500@www.ift.uam-csic.es
SUMMARY:Cosmological Constraints from Simulation-Based Forward-Modeling of DES Cluster Abundances
DESCRIPTION:Cluster cosmology is potentially one of the most powerful observational probes of structure formation. However\, enabling unbiased cosmological constraints requires careful modeling of the cluster selection function. In the case of optical cluster cosmology\, this requires accurate modeling of projection effects. We will introduce a new simulation-based inference framework with which we reanalyze DES Y1 cluster abundances\, highlight both the promise and challenges of this new approach.
URL:https://www.ift.uam-csic.es/event/cosmological-constraints-from-simulation-based-forward-modeling-of-des-cluster-abundances/
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:20250623T150000
DTEND;TZID=Europe/Madrid:20250623T163000
DTSTAMP:20260719T162304
CREATED:20250613T073416Z
LAST-MODIFIED:20251218T085609Z
UID:18485-1750690800-1750696200@www.ift.uam-csic.es
SUMMARY:Novelties in flavour physics
DESCRIPTION:I will give a brief overview of  the so called flavor anomalies\, describing the main strategies followed to disclose physics beyond the Standard Model. I will focus on selected modes and observables that can help identifying the nature of new physics.
URL:https://www.ift.uam-csic.es/event/novelties-in-flavour-physics/
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:20250616T090000
DTEND;TZID=Europe/Madrid:20250616T180000
DTSTAMP:20260719T162304
CREATED:20250613T095239Z
LAST-MODIFIED:20251218T085609Z
UID:18579-1750064400-1750096800@www.ift.uam-csic.es
SUMMARY:New Insights in Black Hole Physics from Holography
DESCRIPTION:Black holes serve as natural laboratories for probing gravity under extreme conditions. New Insights in Black Hole Physics from Holography\, hosted at the Instituto de Física Teórica UAM/CSIC in Madrid\, will bring together leading researchers to discuss recent advances in black hole physics through the framework of holography. The workshop will cover a range of topics\, including quantum aspects of black holes\, near-extremal black hole dynamics\, probes of singularities and interior reconstruction\, holographic applications to strongly correlated systems\, and modern developments in quasinormal modes and black hole perturbations. Featuring distinguished speakers and fostering new collaborations\, this event aims to advance our understanding of black holes and their dual descriptions in quantum field theory\, offering new insights into fundamental questions in quantum gravity. \nRead more >>
URL:https://www.ift.uam-csic.es/event/new-insights-in-black-hole-physics-from-holography/
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:20250612T150000
DTEND;TZID=Europe/Madrid:20250612T160000
DTSTAMP:20260719T162304
CREATED:20250613T073416Z
LAST-MODIFIED:20251218T085609Z
UID:18484-1749740400-1749744000@www.ift.uam-csic.es
SUMMARY:Complexity in Krylov basis at extreme scenarios
DESCRIPTION:In recent times quantum computational complexity has been a major interest to both QI and HEP communities. Complexity in the Krylov basis is one such candidate which has proved its worth in several setups by providing us with meaningful insights.
URL:https://www.ift.uam-csic.es/event/complexity-in-krylov-basis-at-extreme-scenarios/
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:20250610T140000
DTEND;TZID=Europe/Madrid:20250610T150000
DTSTAMP:20260719T162304
CREATED:20250613T073416Z
LAST-MODIFIED:20251218T085609Z
UID:18483-1749564000-1749567600@www.ift.uam-csic.es
SUMMARY:Strong lensing cosmology and the line of sight
DESCRIPTION:Strong gravitational lensing is a powerful observational tool in astrophysics and cosmology which has been used to study the mass and light properties of galaxies and quasars the scales and distributions of dark matter subhaloes and the expansion history of the Universe.
URL:https://www.ift.uam-csic.es/event/strong-lensing-cosmology-and-the-line-of-sight/
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
END:VCALENDAR