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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-9111
DTSTART:20250310T180000Z
DTEND:20250310T193000Z
DTSTAMP:20260413T151419Z
LAST-MODIFIED:20250310T211905Z
LOCATION:Chamberlin 5280
SUMMARY:Quantum-corrected Black Hole Entropy and EFT Transitions\, The
 ory Seminar (High Energy/Cosmology)\, Alberto Castellano\, Chicago Uni
 versity
DESCRIPTION:We investigate quantum corrections to the supersymmetric e
 ntropy of BPS black holes in 4d N=2 effective field theories\, derived
  from Type IIA string theory on a Calabi–Yau threefold. These correc
 tions arise from an infinite series of higher-derivative F-terms modif
 ying the two-derivative supergravity action. Within the large volume r
 egime\, we analyze their moduli dependence as well as the implications
  for black hole entropy. Our results reveal a clear-cut connection bet
 ween the perturbative entropy expansion parameter and the ratio of the
  black hole horizon to the (dual) M-theory Kaluza-Klein scale\, allowi
 ng us to resum the series into a well-defined expression valid beyond 
 the latter cutoff. By closely examining the D0-D2-D4 and D2-D6 BPS sys
 tems\, we show how perturbative quantum effects resolve the apparent U
 V divergences\, leading to a consistent entropy function. Moreover\, i
 n certain cases\, we recover the exact microstate counting of the corr
 esponding five-dimensional black string via circle decompactification.
  Notably\, non-perturbative corrections do not alter our conclusions\,
  further supporting the robustness of our findings. Event recording: h
 ttps://youtu.be/rcSX8iUTQk0
URL:https://www.physics.wisc.edu/events/?id=9111
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