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
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
摘要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.
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.
M. Akbar;Asghar Qadir. Gauss-Bonnet and Lovelock Gravities and the Generalized Second Law of Thermodynamics[J]. 中国物理快报, 2009, 26(6): 60402-060402.
M. Akbar, Asghar Qadir. Gauss-Bonnet and Lovelock Gravities and the Generalized Second Law of Thermodynamics. Chin. Phys. Lett., 2009, 26(6): 60402-060402.
2009, Vol. 26 
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.