BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Luca Iliesiu (Princeton University) DTSTART:20201020T170000Z DTEND:20201020T181500Z DTSTAMP:20260423T023051Z UID:USC-HET/5 DESCRIPTION:Title: The statistical mechanics of near-extremal black holes\nby Luca Iliesi u (Princeton University) as part of USC High Energy Theory Seminars\n\nLec ture held in (Normally) SSC 319 on University Park Campus (USC).\n\nAbstra ct\nAn important open question in black hole thermodynamics is about the e xistence of a "mass gap" between an extremal black hole and the lightest n ear-extremal state within a sector of fixed charge. In this talk\, I will discuss how to reliably compute the partition function of 4d Reissner-Nord strom near-extremal black holes at temperature scales comparable to the co njectured gap. I will show that the density of states at fixed charge does not exhibit a gap\; rather\, at the expected gap energy scale\, we see a continuum of states whose meaning we will extensively discuss. Finally\, i f time permits\, I will present a similar computation for nearly-BPS black holes in 4d N=2 supergravity. As opposed to their non-supersymmetric coun terparts\, such black holes in fact do exhibit a gap consistent with vario us string theory predictions. \n\n********\n\nWaiting room enabled. Pleas e wait some moments for access. Only participants displaying a real name w ill be admitted.\n\nZoom Meeting ID: 917 8410 6071\nPasscode: 080517\n\nWa iting room enabled. Please wait some moments for access. Only participants displaying a real name will be admitted.\n\nZoom Meeting ID: 917 8410 607 1\nPasscode: 080517\n LOCATION:https://researchseminars.org/talk/USC-HET/5/ END:VEVENT END:VCALENDAR