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Gauss-Bonnet and Lovelock Gravities and the Generalized Second Law of Thermodynamics |
M. Akbar1,2, Asghar Qadir1 |
1Centre for Advanced Mathematics and Physics, National University of Sciences and Technology, Peshawar Road, Rawalpindi, Pakistan2Kavli Institute for Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 |
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Cite this article: |
M. Akbar, Asghar Qadir 2009 Chin. Phys. Lett. 26 060402 |
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Abstract It has been shown [Chin.Phys.Lett.25(2008)4199] that the generalized second law of thermodynamics holds in Einstein gravity. Here we extend this procedure for Gauss--Bonnet and Lovelock gravities. It is shown that by employing the general expression for temperature associated with the apparent horizon of a Friedman-Robertson-Walker (FRW) universe and assuming Tm=bTh, we are able to construct conditions for which the generalized second law holds in Gauss-Bonnet and Lovelock gravities, where Tm and Th are the temperatures of the source and the horizon respectively.
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Keywords:
04.70.Dy
97.60.Lf
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Received: 06 March 2009
Published: 01 June 2009
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PACS: |
04.70.Dy
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(Quantum aspects of black holes, evaporation, thermodynamics)
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97.60.Lf
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(Black holes)
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