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题名: Entropy of scalar fields in Reissner-Nordstrom-(anti-)de Sitter spacetimes
作者: 蔡荣根 ;  Zhang, YZ
刊名: MODERN PHYSICS LETTERS A
出版日期: 1996
卷号: 11, 期号:25, 页码:2027-2036
关键词: LOOP QUANTUM CORRECTIONS ;  BLACK-HOLE ENTROPY ;  PARTICLE CREATION ;  THERMODYNAMICS ;  HORIZONS ;  GRAVITY
学科分类: Physics
通讯作者: Cai, RG , CCAST,WORLD LAB,POB 2735,BEIJING 100080,PEOPLES R CHINA.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: The entropy of a free scalar field is calculated in the Reissner-Nordstrom-(anti-)de Sitter spacetimes. Due to the presence of the cosmological horizon in the Reissner-Nordstrom-de Sitter spacetime, we introduce a cutoff at the cosmological horizon, besides the cutoff at the horizon of black holes in the brick wall model. The entropy is found to be the sum of two terms, which are proportional to the area of the cosmological horizon and of black hole horizon, respectively. In the Reissner-Nordstrom-anti-de Sitter spacetime the contribution of the anti-de Sitter background to the entropy of scalar fields vanishes when an infinite volume is taken. The entropy of scalar fields is also evaluated in some special backgrounds described by solutions of Einstein-Maxwell equations with a cosmological constant, such as the cold black holes, lukewarm black holes, ultracold solutions, a naked singularity in de Sitter space, and the de Sitter space. The physical meaning of some results is briefly discussed.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12596
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cai, RG,Zhang, YZ. Entropy of scalar fields in Reissner-Nordstrom-(anti-)de Sitter spacetimes[J]. MODERN PHYSICS LETTERS A,1996,11(25):2027-2036.
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