Hawking radiation of an apparent horizon in a FRW universe
- Title
- Hawking radiation of an apparent horizon in a FRW universe
- Authors
- CAI, RG; CAO, LM; HU, YP; null
- Date Issued
- 2009-08
- Publisher
- IOP PUBLISHING LTD
- Abstract
- Hawking radiation is an important quantum phenomenon of a black hole, which is closely related to the existence of an event horizon of a black hole. The cosmological event horizon of de Sitter space is also of Hawking radiation with a thermal spectrum. By use of the tunneling approach, we show that there is indeed a Hawking radiation with temperature, T = 1/2 pi(r) over tilde (A), for a locally defined apparent horizon of a Friedmann-Robertson-Walker universe with any spatial curvature, where (r) over tilde (A) is the apparent horizon radius. Thus we fill in the gap existing in the literature investigating the relation between the first law of thermodynamics and Friedmann equations
there the apparent horizon is assumed to have such a temperature without any proof. In addition, we stress the implication of the Hawking temperature associated with the apparent horizon.
- Keywords
- BLACK-HOLE EVAPORATION; SCALAR-TENSOR GRAVITY; EQUATION-OF-STATE; 1ST LAW; PARTICLE CREATION; THERMODYNAMICS; BRANEWORLD; COSMOLOGY; ENTROPY; ENERGY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28300
- DOI
- 10.1088/0264-9381/26
- ISSN
- 0264-9381
- Article Type
- Article
- Files in This Item:
- There are no files associated with this item.
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