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SUMMARY:Wilke van der Schee (CERN)
DTSTART:20210119T110000Z
DTEND:20210119T120000Z
DTSTAMP:20260513T204644Z
UID:CCTP_HEP/32
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CCTP_HEP/32/
 ">Entanglement entropy in expanding spacetimes</a>\nby Wilke van der Schee
  (CERN) as part of CCTP HEP Seminars\n\n\nAbstract\nThis talk will be abou
 t entanglement entropy in empty 4-dimensional de Sitter spacetime of a non
 -conformal QFT [2011.08194]. I will first briefly describe the set-up and 
 show how a hydrodynamic plasma dilutes and falls out of equilibrium due to
  expansion towards empty de Sitter spacetime. We track the evolutions of t
 he event and apparent horizons\, showing in particular that the temperatur
 e of the event horizon approaches the de Sitter temperature. Interestingly
 \, in the empty setting we can show that extremal surfaces in the holograp
 hic dual of spherical entangling regions on the boundary QFT probe beyond 
 the dual event horizon if and only if the entangling region is larger than
  the cosmological horizon.\n
LOCATION:https://researchseminars.org/talk/CCTP_HEP/32/
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