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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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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260129T110000
DTEND;TZID=Europe/Madrid:20260129T130000
DTSTAMP:20260531T041440
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:20260129T113000
DTEND;TZID=Europe/Madrid:20260129T163000
DTSTAMP:20260531T041440
CREATED:20260121T105004Z
LAST-MODIFIED:20260128T182326Z
UID:24245-1769686200-1769704200@www.ift.uam-csic.es
SUMMARY:Polygonal Gravity Seminars
DESCRIPTION:Madrid’s Polygonal Gravity Seminar Series\nWednesday\, January 29th. Blue Room (IFT)\n\n11:30h First talk\n\nSpeaker: Robie Hennigar (U. Durham\, UK)\nTitle: Building Regular Black Holes\n\nAbstract: The study of regular (singularity-free) black holes has a long\nhistory\, but progress has been limited by the absence of a dynamical\nframework in which they form and by conceptual issues at the kinematical\nlevel. In this talk I will discuss recent work in which spherically\nsymmetric regular black holes emerge as unique solutions of gravity\ntheories with infinite towers of higher-curvature corrections\, enabling\nexplicit analyses of their formation and dynamics. I will review the\nconstruction\, summarize key results\, and highlight open problems.\n\n————————-\n\n12:45-14:15 Lunch break\n\n————————-\n\n14:30h Second talk\n\nSpeaker: Pablo Cano (U. Murcia)\n\nTitle: Amplification of new physics in the quasinormal mode spectrum of\nhighly-rotating black holes\n\nAbstract: The computation of quasinormal modes of rotating black holes in\nmodified theories of gravity has been recently made possible thanks to the\ndevelopment of new techniques\, like a modified Teukolsky equation and\nspectral methods. However\, no method so far has been able to peek into the\nhighly rotating regime — close to extremality. In this talk\, I will\nconsider a newly identified higher-curvature modification of GR that\npreserves the isospectrality of quasinormal modes in the eikonal limit. In\nthis theory\, eikonal perturbations can be described in terms of an\neffective scalar equation\, and solving it we will obtain the corrections\nto the eikonal Kerr quasinormal modes for arbitrary rotation. For moderate\nrotation\, we check that the eikonal computation gives a good approximation\nto the exact QNMs obtained from the modified Teukolsky equation\, even for\nlow harmonics. For high rotation\, we discover that the corrections to GR\nbecome much larger and can lead to dramatic effects. Our results suggest\nthat the observation of the ringdown of a highly rotating black hole would\nbe a “golden event” to search for new physics.\n\n———————————————–\n\nMore information about these and following monthly seminars can be found at the webpage
URL:https://www.ift.uam-csic.es/event/polygonal-gravity-seminars/
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:20260129T120000
DTEND;TZID=Europe/Madrid:20260129T130000
DTSTAMP:20260531T041440
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:20260531T041440
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:20260129T150000
DTEND;TZID=Europe/Madrid:20260129T160000
DTSTAMP:20260531T041440
CREATED:20251128T152607Z
LAST-MODIFIED:20260123T125214Z
UID:23963-1769698800-1769702400@www.ift.uam-csic.es
SUMMARY:Seminar by Ennio Salvioni (IFAE): 'Probing the Dark Sector with Large Scale Structure'
DESCRIPTION:Title: ‘Probing the Dark Sector with Large Scale Structure’ \nSpeaker: Ennio Salvioni (IFAE) \nVenue&Time: Red Room / 15:00 \nAbstract: Precision cosmology offers opportunities to test the nature of dark matter independently of any interactions with the visible sector. I will discuss how data from galaxy surveys\, including the ongoing DESI and Euclid projects\, can be leveraged to probe new dynamics in the dark sector. For this purpose\, I will show how to extend the Effective Field Theory of Large Scale Structure to include physics beyond the Standard Model\, enabling perturbative computations of the power spectrum of galaxies. The scenarios I will discuss include long-range dark matter self-interactions\, and sub-components of dark matter exhibiting suppressed growth of structure\, such as ultra-light axions or light thermal relics.
URL:https://www.ift.uam-csic.es/event/ift-seminar-ennio-salvioni/
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:20260129T170000
DTEND;TZID=Europe/Madrid:20260129T180000
DTSTAMP:20260531T041440
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
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