Nonextensive scalar field theories and dark energy models
arXiv:cond-mat/0312433 · doi:10.1016/j.physa.2004.04.041
Abstract
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.
10 pages
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Cited by in corpus (8)
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- Intermediate statistics as a consequence of deformed algebra
- Phase-space of flat Friedmann-Robertson-Walker models with both a scalar field coupled to matter and radiation
- Two physical explanations of the nonextensive parameter in a self-gravitating system
- Information Shift Dynamics Described by Tsallis Entropy on a Compact Phase Space
- Statistical mechanics of the vacuum