Chin. Phys. Lett.  2009, Vol. 26 Issue (6): 060402    DOI: 10.1088/0256-307X/26/6/060402
GENERAL |
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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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.
Keywords: 04.70.Dy      97.60.Lf     
Received: 06 March 2009      Published: 01 June 2009
PACS:  04.70.Dy (Quantum aspects of black holes, evaporation, thermodynamics)  
  97.60.Lf (Black holes)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/6/060402       OR      https://cpl.iphy.ac.cn/Y2009/V26/I6/060402
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