BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Instituto de Física Teórica - ECPv6.15.11//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Instituto de Física Teórica
X-ORIGINAL-URL:https://www.ift.uam-csic.es
X-WR-CALDESC:Events for Instituto de Física Teórica
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Madrid
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20261025T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20270328T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20271031T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260115T120000
DTEND;TZID=Europe/Madrid:20260115T130000
DTSTAMP:20260407T012113
CREATED:20260108T233656Z
LAST-MODIFIED:20260109T064725Z
UID:24167-1768478400-1768482000@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'Exotic Branes and Symmetries of String Theory'
DESCRIPTION:Speaker: Andriana Makridou (IFT) \nVenue & Time: Red Room / 12:00 \nAbstract: Are duality transformations symmetries of string theory? For AdS space-time the answer is\nno for generic asymptotic values of the moduli\, since the duality symmetry is broken explicitly\nin the dual conformal field theory. In contrast\, in string theory in flat space-time\, monodromy\naround codimension two exotic branes show that duality transformations are spontaneously\nbroken discrete gauge symmetries with observable consequences\, provided macroscopic loops\nof these branes are not hidden behind an event horizon. We discuss how this can be achieved\nand how the situation in flat space-time differs from that in AdS space-time. We also discuss\nobservability of codimension two non-BPS branes and codimension one BPS and non-BPS\nbranes. Based on [2512.19068].
URL:https://www.ift.uam-csic.es/event/sps-journal-club-exotic-branes-and-symmetries-of-string-theory/
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:20260115T120000
DTEND;TZID=Europe/Madrid:20260115T130000
DTSTAMP:20260407T012113
CREATED:20260108T235522Z
LAST-MODIFIED:20260112T110919Z
UID:24173-1768478400-1768482000@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club: 'Bubble velocities in local equilibrium from a pseudopotential'
DESCRIPTION:Speaker: Eric Madge\, IFT \nVenue&Time: 12:00 / Grey room 3 \nAbstract: We present a new method to estimate terminal bubble velocities during first-order phase transitions in a plasma in local equilibrium. The method relies on calculating the extrema of a modified potential function for the scalar field undergoing the transition. The shape of this function\, which we refer to as the “pseudopotential”\, changes with the wall velocity\, and if the dependence of the fluid temperature on scalar gradients is weak—which is confirmed to hold with high accuracy in concrete examples—the difference in pseudopotential between two appropriate extrema gives the net outward pressure acting on the bubble wall. It then follows that the correct terminal bubble velocities are those that lead to degenerate minima in the pseudopotential. This allows to compute bubble velocities without having to solve the equation of motion of the scalar field\, and in contrast to other methods this can be done without relying on simplified equations of state for the plasma or without choosing a specific ansatz for the scalar field profile. We illustrate the method in a singlet extension of the Standard Model\, computing the net outward pressure as a function of the wall velocity. We confirm the dip in outward pressure found in the literature for hybrid bubbles\, which implies that stationary deflagrations are stable\, while their detonation counterparts are unstable
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-bubble-velocities-in-local-equilibrium-from-a-pseudopotential/
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:20260120T140000
DTEND;TZID=Europe/Madrid:20260120T150000
DTSTAMP:20260407T012113
CREATED:20260116T125647Z
LAST-MODIFIED:20260116T125647Z
UID:24212-1768917600-1768921200@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-10/
LOCATION:Discussion room 5th floor\, C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260122T120000
DTEND;TZID=Europe/Madrid:20260122T130000
DTSTAMP:20260407T012113
CREATED:20260116T122902Z
LAST-MODIFIED:20260116T123748Z
UID:24200-1769083200-1769086800@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'K-Points and Type IIB/Heterotic Duality with NS5-Branes'
DESCRIPTION:Speaker: Lorenzo Paoloni (IFT) \nVenue & Time: Red Room / 12:00 \nAbstract: We revisit type II_0 limits in the vector multiplet moduli space of compactifications of Type IIB string theory on Calabi-Yau threefolds. These limits are special because they cannot be described using mirror symmetry. While we showed in previous work that the gravitational duality frame emerging in such limits corresponds to a weakly coupled heterotic string compactified on K3 times a string-sized torus\, our focus here is on the additional field theory sectors that decouple from gravity in these asymptotic regimes. Concretely\, we argue that\, in the dual heterotic description\, these field theory sectors correspond to spacetime-filling NS5-branes wrapping the heterotic torus. The existence of such non-perturbative field theory sectors manifests itself in an exponential dependence of the prepotential on the heterotic dilaton at leading order. Applied to K-point limits in one-parameter moduli spaces\, our results imply that these limits are in perfect agreement with the Distance and Emergent String Conjectures. More precisely\, the light tower of states predicted by the Distance Conjecture arises from excitations of a weakly coupled heterotic string compactified to four dimensions on a background containing spacetime-filling NS5-branes.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-k-points-and-type-iib-heterotic-duality-with-ns5-branes/
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
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260122T120000
DTEND;TZID=Europe/Madrid:20260122T130000
DTSTAMP:20260407T012113
CREATED:20260116T123236Z
LAST-MODIFIED:20260116T123708Z
UID:24198-1769083200-1769086800@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-5/
LOCATION:Madrid
CATEGORIES:Journal clubs
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260122T170000
DTEND;TZID=Europe/Madrid:20260122T180000
DTSTAMP:20260407T012113
CREATED:20260116T123614Z
LAST-MODIFIED:20260116T123646Z
UID:24199-1769101200-1769104800@www.ift.uam-csic.es
SUMMARY:Old Journal Club: 'Particle Spectrum in Quantum Field Theory'
DESCRIPTION:Alejandro Puga (IFT) will present “Particle Spectrum in Quantum Field Theory”  de Alexander M. Polyakov (JETP Lett. 20 (1974) 194-195)\n\nAbstract: We investigate the nonperturbative structure of quantum field theories and its consequences for the physical spectrum of excitations. Emphasis is placed on the role of instantons—topologically nontrivial field configurations—which contribute essentially to tunneling processes and mass generation beyond perturbation theory. The analysis demonstrates how instanton effects modify correlation functions and lead to qualitatively new features in the particle spectrum\, highlighting the deep connection between topology\, symmetry\, and dynamics in quantum field theory.\n\nVenue & Time: Blue Room / 17:00
URL:https://www.ift.uam-csic.es/event/old-journal-club-particle-spectrum-in-quantum-field-theory/
LOCATION:Blue Room\, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260127T140000
DTEND;TZID=Europe/Madrid:20260127T150000
DTSTAMP:20260407T012113
CREATED:20260123T133337Z
LAST-MODIFIED:20260123T133427Z
UID:24294-1769522400-1769526000@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-11/
LOCATION:Madrid
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260129T110000
DTEND;TZID=Europe/Madrid:20260129T130000
DTSTAMP:20260407T012113
CREATED:20260126T091747Z
LAST-MODIFIED:20260126T091759Z
UID:24298-1769684400-1769691600@www.ift.uam-csic.es
SUMMARY:ML-AI-HPC Jounal Club: 'Probabilistic modeling and Bayesian inference for collider data'
DESCRIPTION:Title: ‘Probabilistic modeling and Bayesian inference for collider data’ \nSpeaker: Santiago Tanco (IFLP-CONICET/UNLP) \nVenue&Time: Gray Room 1 / 11:00 \n 
URL:https://www.ift.uam-csic.es/event/ml-ai-hpc-jounal-club-probabilistic-modeling-and-bayesian-inference-for-collider-data/
LOCATION:Gray Room 1\, Instituto de Física Teórica\, C/ Nicolás Cabrera 13-15\, Cantoblanco\, Madrid\, Madrid\, 28049\, Spain
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260129T120000
DTEND;TZID=Europe/Madrid:20260129T130000
DTSTAMP:20260407T012113
CREATED:20260122T130534Z
LAST-MODIFIED:20260122T130751Z
UID:24262-1769688000-1769691600@www.ift.uam-csic.es
SUMMARY:SPS Journal Club: 'Mapping moduli across heterotic conifolds'
DESCRIPTION:Strings\, Pheno and the Swampland Journal Club\n\n\nTitle: ‘Mapping moduli across heterotic conifolds’\n\n\nSpeaker: Christian Aoufia (IFT)\n\n\nVenue & Time: Red Room / 12:00\n\n\nAbstract: In this work\, we provide evidence for a duality between 4-dimensional Calabi-Yau compactifications of the heterotic string\, in which the base manifolds are linked by a conifold transition. In recent work\, a geometric proposal was put forward for how 5-branes and gauge bundles are carried across such transitions. It was observed that compactifications connected in this way lead to 4-dimensional effective theories with the same massless spectrum. Here we provide much stronger evidence that these heterotic conifold transitions do indeed lead to dual theories. We construct a duality map between the field spaces of the two compactifications and use it to demonstrate the agreement of large numbers of holomorphic functions appearing in the definition of the effective theories. In an example\, we show that 147\,440 independent superpotential Yukawa couplings agree across the duality as holomorphic functions of the moduli. In certain special cases\, the putative duality studied here reduces to the target space duality of (0\,2) gauged linear sigma models.
URL:https://www.ift.uam-csic.es/event/sps-journal-club-mapping-moduli-across-heterotic-conifolds/
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:20260129T120000
DTEND;TZID=Europe/Madrid:20260129T130000
DTSTAMP:20260407T012113
CREATED:20260123T120019Z
LAST-MODIFIED:20260123T120019Z
UID:24286-1769688000-1769691600@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club: 'GeV-scale QCD Axion'
DESCRIPTION:Title: ‘GeV-scale QCD Axion’\n\nSpeaker: Thomas Steingasser (IFT)\n\nVenue & Time: 12:00 / Gray Room 3\n\nAbstract: In order to solve the strong CP problem\, we study the possibility that the Peccei–Quinn symmetry is broken below the QCD scale. We find that a QCD axion can be above GeV\, and may be among the observed η resonances. It is immune to quantum gravity corrections. The only fermion that has a U (1) Peccei–Quinn charge is the right-handed up quark. Flavor-changing neutral currents are surprisingly small\, except for a possible but not necessary contribution to D0–D0 mixing. All accelerator and astrophysical limits can be evaded. The most significant constraint is the mass splitting between π± and π0. In a UV completed model\, LHC can look for a dijet resonance in u ̄u\,u  ̄d\, d ̄u channels.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-gev-scale-qcd-axion/
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:20260129T170000
DTEND;TZID=Europe/Madrid:20260129T180000
DTSTAMP:20260407T012113
CREATED:20260123T120447Z
LAST-MODIFIED:20260123T120531Z
UID:24288-1769706000-1769709600@www.ift.uam-csic.es
SUMMARY:Old Journal Club: 'Topological Quantization and Cohomology'
DESCRIPTION:Gonzalo F. Casas (IFT) will present ‘Topological Quantization and Cohomology‘ by Orlando Álvarez  Commun.Math.Phys. 100 (1985) 279 \nAbstract:  \nThe relationships between topological charge quantization\,Lagrangians and various cohomology theories are studied. A very general criterion for charge quantization is developed andapplied to various physical models. The relationship betweencohomology and homotopy is discussed. \nMore info: https://inspirehep.net/literature/206164
URL:https://www.ift.uam-csic.es/event/old-journal-club-topological-quantization-and-cohomology/
LOCATION:Blue Room\, Instituto de Física Teórica (IFT) - C. Nicolás Cabrera\, 13-15\, Fuencarral-El Pardo\, Madrid\, 28049\,\, Spain
CATEGORIES:Journal clubs,Scientific activities
ATTACH;FMTTYPE=image/png:https://www.ift.uam-csic.es/wp-content/uploads/2026/01/OJC_GON.png
END:VEVENT
END:VCALENDAR