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X-WR-CALDESC:Events for Instituto de Física Teórica
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T113000
DTEND;TZID=Europe/Madrid:20260507T123000
DTSTAMP:20260613T062406
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/
LOCATION:Madrid
CATEGORIES:Journal clubs,Scientific activities
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T113000
DTEND;TZID=Europe/Madrid:20260507T123000
DTSTAMP:20260613T062406
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/
LOCATION:Madrid
CATEGORIES:Journal clubs,Scientific activities
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T120000
DTEND;TZID=Europe/Madrid:20260507T130000
DTSTAMP:20260613T062406
CREATED:20260504T072946Z
LAST-MODIFIED:20260504T072946Z
UID:24964-1778155200-1778158800@www.ift.uam-csic.es
SUMMARY:Pheno Journal Club: "On the Inverse Problem in Effective Field Theory"
DESCRIPTION:Jaime Fernandez Tejedor (IFT) will present “On the Inverse Problem in Effective Field Theory”.\n\nVenue&Time: Gray Room 2 / 12:00\n\nAbstract:\n\nWe show that the tree-level spectrum of heavy particles can be directly extracted from the Wilson coefficients of the corresponding effective field theory at low energies. This procedure is exact when the number of resonances is finite\, and otherwise approximate. Our results are derived from a new class of analytic dispersion relations that depend nonlinearly on the scattering amplitude and apply to an exceedingly broad class of theories and kinematics.
URL:https://www.ift.uam-csic.es/event/pheno-journal-club-on-the-inverse-problem-in-effective-field-theory/
LOCATION:Grey Room 2\, Instituto de Física Teórica\, Madrid\, Madrid\, 28037\, Spain
CATEGORIES:Journal clubs,Scientific activities
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BEGIN:VEVENT
DTSTART;TZID=Europe/Madrid:20260507T150000
DTEND;TZID=Europe/Madrid:20260507T160000
DTSTAMP:20260613T062406
CREATED:20260420T102805Z
LAST-MODIFIED:20260420T102828Z
UID:24930-1778166000-1778169600@www.ift.uam-csic.es
SUMMARY:Seminar by Christian Northe (Institute of Physics\, Prague)
DESCRIPTION:Title: Entanglement through topological interfaces in CFT revisited \nSpeaker: Christian Northe (Institute of Physics\, Prague) \nVenue&Time: Red Room / 15:00 \nAbstract: Present theoretical predictions for the entanglement entropy through topological defects are violated in numerical simulations of critical systems. In this talk\, I discuss a paradigm shift in the preparation of reduced density matrices in the presence of topological defects\, and emphasize the role of defect networks with which they can be dressed. Grouplike and duality defects are considered in detail for the Ising model\, establishing agreement with all numerically found entanglement entropies. Since this new construction functions at the level of reduced density matrices\, it accounts for topological defects beyond the entanglement entropy to other entanglement measures. The framework employs boundary conformal field theory techniques to implement the factorization of Hilbert space\, which I recapitulate at the beginning of the talk and discuss its relation with the entanglement spectrum.
URL:https://www.ift.uam-csic.es/event/seminar-by-christian-northe-institute-of-physics-prague/
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
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