BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Nicolaos Toumbas (Cyprus U.)
DTSTART:20240429T090000Z
DTEND:20240429T100000Z
DTSTAMP:20260423T024828Z
UID:NKUA-HEP/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NKUA-HEP/4/"
 >A time dependent ER=EPR for closed FRW cosmologies</a>\nby Nicolaos Toumb
 as (Cyprus U.) as part of NKUA HEP Seminars\n\n\nAbstract\nIn this talk\, 
 I will discuss extensions of the static patch holographic proposal for de 
 Sitter space and entanglement entropy calculation prescriptions to generic
  closed FRW cosmologies in arbitrary dimensions. For large classes of boun
 cing and Big Bang/Big Crunch cosmologies\, the spacetime can be encoded on
  two holographic screens at the apparent horizons associated to observers 
 at antipodal points of the spatial sphere. The leading contributions to th
 e entanglement entropy between the screens arise from a minimal extremal t
 rapped or anti-trapped sphere in the region between the apparent horizons.
  The picture amounts to a time-dependent\, cosmological realization of the
  ER=EPR conjecture. For the Big Crunch contracting cases\, the screens dis
 entangle with the geometrical bridge between them closing off when the min
 imal extremal trapped sphere hits the Big Crunch singularity at a time bef
 ore the collapse of the Universe.\n
LOCATION:https://researchseminars.org/talk/NKUA-HEP/4/
END:VEVENT
END:VCALENDAR