BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Marios Galanis (Stanford University) DTSTART:20250930T090000Z DTEND:20250930T100000Z DTSTAMP:20260423T024827Z UID:NKUA-HEP/42 DESCRIPTION:Title: Superradiant interactions of cosmic relics and how to look for them\ nby Marios Galanis (Stanford University) as part of NKUA HEP Seminars\n\n\ nAbstract\nIn this talk I will do three things. First\, I will outline the conditions under which the interaction rate of inelastic processes with a system consisting of N targets scales as N^2. Second\, I will present com putations of interaction rates for several weakly interacting particles\, including the cosmic neutrino background and axion dark matter\, and will explain the underlying physics. Third\, I will present a concrete experime ntal protocol using Nuclear Magnetic Resonance that can extract these effe cts through quantum observables not relying on net energy transfer. This p rotocol has the potential to significantly accelerate axion and dark photo n dark matter searches and extend the reach of existing axion experiments to probe QCD axion-nuclear spin couplings. More broadly\, it paves the way for detecting coherent inelastic interactions from other cosmic relics--- most notably the cosmic neutrino background---and establishes nuclear-spin -based systems as a new class of quantum\, ultra-low-threshold detectors.\ n LOCATION:https://researchseminars.org/talk/NKUA-HEP/42/ END:VEVENT END:VCALENDAR