ENTANGLEMENT ENTROPY IN CURVED SPACETIMES WITH EVENT HORIZONS

Authors
MULLER R LOUSTO CO
Citation
R. Muller et Co. Lousto, ENTANGLEMENT ENTROPY IN CURVED SPACETIMES WITH EVENT HORIZONS, Physical review. D. Particles and fields, 52(8), 1995, pp. 4512-4517
Citations number
26
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
52
Issue
8
Year of publication
1995
Pages
4512 - 4517
Database
ISI
SICI code
0556-2821(1995)52:8<4512:EEICSW>2.0.ZU;2-4
Abstract
We consider the computation of the entanglement entropy in curved back grounds with event horizons. We use a Hamiltonian approach to the prob lem and perform numerical computations on a spherical lattice of spaci ng a. We study the cosmological case and make explicit computations fo r the Friedmann-Robertson-Walker universe. Our results for a massless, minimally coupled scalar field can be summarized by S-ent = 0.30r(H)( 2)/a(2), which resembles the flat space formula, although here the hor izon radius tau(H) is time dependent.