Boson stars: Chemical potential and quark condensates
Abstract
We study the properties of a star made of self-gravitating bosons gas in a mean-field approximation. A generalized set of Tolman-Oppenheimer-Volkov(TOV) equations is derived to incorporate the effect of chemical-potential in the general relativistic frame work. The metric-dependence of the chemical-potential gives a new class of solutions for the boson stars. It is demonstrated that the maximum mass and radius of the star change in a significant way when the effect of finite chemical-potential is considered. We also discuss the case of a boson star made of quark-condensates. It is found that when the self-interaction between the condensates is small as compared to their mass, the typical density is too high to form a diquark-boson star. Our results indicate that the star of quark-condensate may be formed in a low-density and high-pressure regime.
Keywords
Cite
@article{arxiv.0910.1972,
title = {Boson stars: Chemical potential and quark condensates},
author = {Jitesh R. Bhatt and V. Sreekanth},
journal= {arXiv preprint arXiv:0910.1972},
year = {2010}
}
Comments
(8 pages, 7 figures) Extensively modified the introduction and new references added.