The Entropy of the Microwave Background and the Acceleration of the Universe

Details The Entropy of the Microwave Background and the Acceleration of the Universe The Entropy of the Microwave Background and the Acceleration of the Universe

2003-07-02

arxiv.org/abs/hep-th/0307031v2

JHEP 0309:024,2003

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 1 eps figure, Latex, references added

Scientific paper

10.1088/1126-6708/2003/09/024

If the present acceleration of the universe is due to a cosmological constant, \lambda, then the entropy of the microwave background is bounded. It cannot exceed \lambda^{-3/4} \sim 10^{91}, which is much less than the entropy of empty de Sitter space \lambda^{-1} \sim 10^{122}. This is due to the limited efficiency of storing entropy by local field theoretical degrees of freedom. The observed entropy of the microwave background is of O(10^{85}).

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