Nonextensive scalar field theories and dark energy models

Details Nonextensive scalar field theories and dark energy models Nonextensive scalar field theories and dark energy models

2003-12-17

arxiv.org/abs/cond-mat/0312433v1

Physica A340:459-466,2004

Physics

Condensed Matter

10 pages

Scientific paper

10.1016/j.physa.2004.04.041

Current astronomical measurements indicate that approximately 73% of the universe is made up of dark energy. Stochastically quantized self-interacting scalar fields can serve as suitable models to generate dark energy. We study a particular model where the scalar field theory underlying dark energy exhibits strongest possible chaotic behaviour. It is shown that the fluctuating chaotic field momenta obey a generalized (nonextensive) statistical mechanics, with an entropic index q given by q=3, respectively q=-1 if the escort formalism is used.

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