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Titolo: Statistical entropies of scalar and spinor fields in Vaidyade Sitter spacetime computed by the thinlayer method  art. no. 044025
Autore: He, F; Zhao, Z; Kim, SW;
 Indirizzi:
 Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China Beijing Normal Univ Beijing Peoples R China 100875 0875, Peoples R China Ewha Womans Univ, Dept Sci Educ, Seoul 120750, South Korea Ewha Womans Univ Seoul South Korea 120750 duc, Seoul 120750, South Korea Xiang Tan Normal Univ, Dept Phys, Xiangtan 411201, Peoples R China Xiang Tan Normal Univ Xiangtan Peoples R China 411201 1, Peoples R China
 Titolo Testata:
 PHYSICAL REVIEW D
fascicolo: 4,
volume: 6404,
anno: 2001,
pagine: 4025 
 SICI:
 05562821(20010815)6404:4<4025:SEOSAS>2.0.ZU;2G
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 NEWMAN BLACKHOLE; THERMODYNAMICS;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 discip_EC
 Citazioni:
 17
 Recensione:
 Indirizzi per estratti:
 Indirizzo: He, F Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China Beijing Normal Univ Beijing Peoples R China 100875 Peoples R China



 Citazione:
 F. He et al., "Statistical entropies of scalar and spinor fields in Vaidyade Sitter spacetime computed by the thinlayer method  art. no. 044025", PHYS REV D, 6404(4), 2001, pp. 4025
Abstract
The brickwall method based on thermal equilibrium at a large scale cannotbe applied to cases out of equilibrium, such as nonstationary spacetime with two horizons, for example, Vaidyade Sitter spacetime. We improve the brickwall method and propose a thinlayer method. The entropies of scalar and spinor fields in Vaidyade Sitter spacetime are calculated by the thinlayer method, The condition of local equilibrium near the two horizons is used as a working postulate and is maintained for a black hole which evaporates slowly enough and whose mass is far greater than the Planck scale. There are two horizons in Vaidyade Sitter spacetime. We think that the totalentropy is mainly attributed to the two layers near the two horizons. The entropy of a scalar field in Vaidyade Sitter spacetime is a linear sum ofthe area of the black hole horizon and that of the cosmological horizon. Thinking of Dirac equations in the NewmanPenrose formalism, there are four components of the wave functions F1, F2, G(1), and G(2). The total entropy is summed up from the entropies corresponding to the four components. On the same condition of the scalar field, the resulting entropy is 7/2 times that of the scalar field, and is also a linear sum of the area of the blackhole horizon and that of the cosmological horizon. The difference from thestationary black hole is that the result relies on timedependent cutoffs.
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Documento generato il 23/09/20 alle ore 00:17:42