In this article is shown that the thermodynamical evolution of a Schwarzschild de Sitter space is the evaporation of its black hole. The result is extended in higher dimensions to Lovelock theories of gravity with a single positive cosmological constant.
@article{arxiv.0801.4591,
title = {de Sitter Thermodynamics: A glimpse into non equilibrium},
author = {Rodrigo Aros},
journal= {arXiv preprint arXiv:0801.4591},
year = {2008}
}