BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Entropy in gravitational von Neumann algebras
DTSTART:20240923T140000
DTEND:20240923T151500
DTSTAMP:20260916T224300Z
UID:41878b96e9e86cc3cad2ac80078eec7c1dd9a046d5fa73750a3cd892
CATEGORIES:Conferences - Seminars
DESCRIPTION:Antony Speranza (University of Amsterdam)\nEntanglement entrop
 y in quantum field theory is UV-divergent\, which makes it a challenging q
 uantity to analyze from an algebraic perspective.  In this talk\, I will
  describe how perturbatively coupling to gravity improves this situation\,
  resulting in a well-defined notion of renormalized entropy in the semicla
 ssical limit.  This entropy is constructed using techniques from the the
 ory of von Neumann algebras\, and agrees with the generalized entropy of a
  subregion\, consisting of the sum of the quantum field entanglement entro
 py and the area of the entangling surface.  As an application\, I will s
 how how to derive the generalized second law for black hole horizons in te
 rms of this renormalized entropy.  Time permitting\, I will also discuss
  a construction of a gravitational von Neumann algebra in a slow-roll infl
 ation background\, and describe how the background provides an intrinsic n
 otion of a cosmological observer.  
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727 https://epfl.zoom.u
 s/j/69362612859
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR