A thermodynamical analysis of the inhomogeneous FLRW type model: Redefined Bekenstein-Hawking system

作者：Haldar Sourav; Bhandari Pritikana; Chakraborty Subenoy^*

来源：International Journal of Geometric Methods in Modern Physics, 2017, 14(11): 1750159.

DOI：10.1142/S0219887817501596

• Inhomogeneous FLRW-type model
• thermodynamical laws
• Bekenstein entropy
• generalized Hawking temperature

A detailed thermodynamical study has been presented for the inhomogeneous FLRW-type model of the Universe bounded by a horizon with three possible modifications of Bekenstein-Hawking formulation of thermodynamical parameters namely entropy and temperature. For the first choice of the thermodynamical system validity of both the first law of thermodynamics (FLT) and the generalized second law of thermodynamics (GSLT) are examined. Also, the integrability conditions for the exact one-forms in both the thermodynamical laws are analyzed and it is found that they are consistent with each other. On the other hand, for the other two choices of the thermodynamical system to hold the first law of thermodynamics, one must restrict the parameters (in the definition of the thermodynamical variables) in some specific integral form.

• 出版日期2017-11