On Gravitational Entropy of de Sitter Universe

S. C. Ulhoa, E. P. Spaniol
2016 Journal of Gravity  
The paper deals with the calculation of the gravitational entropy in the context of teleparallel gravity for de Sitter space-time. In such a theory it is possible to define gravitational energy and pressure; thus we use those expressions to construct the gravitational entropy. We use the temperature as a function of the cosmological constant and write the first law of thermodynamics from which we obtain the entropy. In the limit Λ≪1 we find that the entropy is proportional to volume, for a
more » ... fic temperature's choice; we find that ΔS≥0 as well. We also identify a phase transition in de Sitter space-time by analyzing the specific heat.
doi:10.1155/2016/4504817 fatcat:qzlavx227bfyhgg5jdneg7wcg4