Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-07-13
JHEP 0509 (2005) 060
Physics
High Energy Physics
High Energy Physics - Theory
16 pages JHEP style, no figures. v2: references added; v3: typo corrected in Eq.(3.1), supersedes published version
Scientific paper
10.1088/1126-6708/2005/09/060
The de Sitter thermodynamics of cosmological models with a modified Friedmann equation is considered, with particular reference to high-energy Randall-Sundrum and Gauss-Bonnet braneworlds. The Friedmann equation can be regarded as the first law of thermodynamics of an effective gravitational theory in quasi de Sitter spacetime. The associated entropy provides some selection rules for the range of the parameters of the models, and is proposed for describing tunneling processes in the class of high-energy gravities under consideration.
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