English

Non-gaussian statistics and the relativistic nuclear equation of state

Nuclear Theory 2009-08-17 v1 High Energy Astrophysical Phenomena Statistical Mechanics Nuclear Experiment

Abstract

We investigate possible effects of quantum power-law statistical mechanics on the relativistic nuclear equation of state in the context of the Walecka quantum hadrodynamics theory. By considering the Kaniadakis non-Gaussian statistics, characterized by the index κ\kappa (Boltzmann-Gibbs entropy is recovered in the limit κ0\kappa\to 0), we show that the scalar and vector meson fields become more intense due to the non-Gaussian statistical effects (κ0\kappa \neq 0). From an analytical treatment, an upper bound on κ\kappa (κ<1/4\kappa < 1/4) is found. We also show that as the parameter κ\kappa increases the nucleon effective mass diminishes and the equation of state becomes stiffer. A possible connection between phase transitions in nuclear matter and the κ\kappa-parameter is largely discussed.

Keywords

Cite

@article{arxiv.0902.2383,
  title  = {Non-gaussian statistics and the relativistic nuclear equation of state},
  author = {F. I. M. Pereira and R. Silva and J. S. Alcaniz},
  journal= {arXiv preprint arXiv:0902.2383},
  year   = {2009}
}

Comments

8 pages, 8 fifures, LaTeX