Nonextensive statistical effects on nuclear astrophysics and many-body problems

Details Nonextensive statistical effects on nuclear astrophysics and many-body problems Nonextensive statistical effects on nuclear astrophysics and many-body problems

2005-04-28

arxiv.org/abs/nucl-th/0504080v1

Physics

Nuclear Physics

Nuclear Theory

8 pages, Proceedings of the X Convegno su Problemi di Fisica Nucleare Teorica

Scientific paper

Density and temperature conditions in many stellar core (like the solar core) imply the presence of nonideal plasma effects with memory and long-range interactions between particles. This aspect suggests the possibility that the stellar core could not be in a global thermodynamical equilibrium but satisfies the conditions of a metastable state with a stationary (nonextensive) power law distribution function among ions. The order of magnitude of the deviation from the standard Maxwell-Boltzmann distribution can be derived microscopically by considering the presence of random electrical microfields in the stellar plasma. We show that such a nonextensive statistical effect can be very relevant in many nuclear astrophysical problems.

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