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X-WR-CALDESC:Events for Instituto de Física Teórica
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DTSTART;TZID=Europe/Madrid:20251127T120000
DTEND;TZID=Europe/Madrid:20251127T130000
DTSTAMP:20260415T072210
CREATED:20251121T123840Z
LAST-MODIFIED:20251218T085316Z
UID:23879-1764244800-1764248400@www.ift.uam-csic.es
SUMMARY:String\, Pheno and the Swampland Journal Club: 'Anomaly-induced vanishing of brane partition functions'
DESCRIPTION:Speaker: Michelangelo Tartaglia (IFT) \nVenue & Time: Red Room / 12:00 \nAbstract: In the presence of ‘t Hooft anomalies\, backgrounds for the symmetries of a quantum field theory can lead to non-conservation of Noether currents\, or more generally\, to the presence of charged insertions in the path integral. When there is a net background charge\, the partition function evaluated on closed manifolds will vanish. For anomalous symmetries\, this statement can also be understood as the anomaly theory giving rise to a non-trivial anomalous phase for the partition function even for “rigid” transformations which leave all background fields unchanged. We use the generalisation of this second viewpoint to the setting of anomalous higher-form symmetries in order to show vanishing of the partition function for a number of examples\, both with and without a Lagrangian description. In particular\, we show how to derive from these considerations the analogue of the Freed-Witten anomaly cancellation condition for the M5-brane\, and also that for the D3-brane in S-fold backgrounds.
URL:https://www.ift.uam-csic.es/event/string-pheno-and-the-swampland-journal-club/
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
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DTSTART;TZID=Europe/Madrid:20251127T150000
DTEND;TZID=Europe/Madrid:20251127T160000
DTSTAMP:20260415T072210
CREATED:20251029T123222Z
LAST-MODIFIED:20251125T081857Z
UID:23518-1764255600-1764259200@www.ift.uam-csic.es
SUMMARY:Seminar: Constraining Muon decay parameters from CEvNS measurements at Spallation Sources
DESCRIPTION:Speaker: Suraj Prakash\, IFIC (Valencia)\n \nVenue&Time: Red Room / 3:00 PM \nAbstract: The talk will present a study of the sensitivity of COHERENT-like experiments to non-standard neutrino interactions within the vWEFT framework\, i.e. low-energy EFT with additional right-handed Dirac neutrinos. Our analysis incorporates\, for the first time\, flavor-general New Physics effects in both neutrino production (from pion and muon decays) and neutrino detection\, through Coherent Elastic Neutrino-Nucleus Scattering (CEvNS). As a special case\, we will highlight how CEvNS data provide an alternative probe for muon decay parameters\, for neutrino experiments where muon decay is a source of neutrinos. We will further illustrate how the results can be conveniently formulated in compact form and the ease with which they can be implemented in existing or future analyses using effective nuclear charges. Finally\, We will discuss numerical results based on current COHERENT data\, and also present estimates for the sensitivity of future measurements.
URL:https://www.ift.uam-csic.es/event/seminar-constraining-muon-decay-parameters-from-cevns-measurements-at-spallation-sources/
CATEGORIES:Scientific activities,Seminars
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