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dc.contributor.author김성원-
dc.date.accessioned2018-05-02T08:15:55Z-
dc.date.available2018-05-02T08:15:55Z-
dc.date.issued2001-
dc.identifier.issn0556-2821-
dc.identifier.otherOAK-796-
dc.identifier.urihttp://dspace.ewha.ac.kr/handle/2015.oak/242834-
dc.description.abstractThe brick-wall method based on thermal equilibrium at a large scale cannot be applied to cases out of equilibrium, such as nonstationary space-time with two horizons, for example, Vaidya-de Sitter space-time. We improve the brick-wall method and propose a thin-layer method. The entropies of scalar and spinor fields in Vaidya-de Sitter space-time are calculated by the thin-layer 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 Vaidya-de Sitter space-time. We think that the total entropy is mainly attributed to the two layers near the two horizons. The entropy of a scalar field in Vaidya-de Sitter space-time is a linear sum of the area of the black hole horizon and that of the cosmological horizon. Thinking of Dirac equations in the Newman-Penrose formalism, there are four components of the wave functions F 1, F 2, 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 black hole horizon and that of the cosmological horizon. The difference from the stationary black hole is that the result relies on time-dependent cutoffs. ©2001 The American Physical Society.-
dc.languageEnglish-
dc.titleStatistical entropies of scalar and spinor fields in Vaidya-de Sitter space-time computed by the thin-layer method-
dc.typeArticle-
dc.relation.issue4-
dc.relation.volume64-
dc.relation.indexSCOPUS-
dc.relation.journaltitlePhysical Review D-
dc.identifier.doi10.1103/PhysRevD.64.044025-
dc.identifier.wosidWOS:000170467600054-
dc.identifier.scopusid2-s2.0-3543041115-
dc.author.googleHe F.-
dc.author.googleZhao Z.-
dc.author.googleKim S.-W.-
dc.contributor.scopusid김성원(55862533800)-
dc.date.modifydate20200901081003-


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