Regular Article - Theoretical Physics
A general thermodynamical description of the event horizon in the FRW universe
Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou, 310027, China
* e-mail: email@example.com
Accepted: 8 January 2016
Published online: 21 January 2016
The Friedmann equation in the Friedmann–Robertson–Walker (FRW) universe with any spatial curvature is derived from the first law of thermodynamics on the event horizon. The key idea is to redefine a Hawking temperature on the event horizon. Furthermore, we obtain the evolution equations of the universe including the quantum correction and explore the evolution of the universe in f(R) gravity. In addition, we also investigate the generalized second law of thermodynamics in Einstein gravity and f(R) gravity. This perspective also implies that the first law of thermodynamics on the event horizon has a general description in respect of the evolution of the FRW universe.
© The Author(s), 2016