科研之友
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摘要
It is known that for self-gravitating radiation stars in anti-de Sitter (AdS) spacetime, there is a critical dimension, larger than it, the stars always maintain stability with any central energy density rho(c); smaller than it, there is a maximal mass for the rho(c) and when the rho(c) continues to increase, the total mass of stars becomes a function of the rho(c), and the function appears as an oscillation behavior and therefore the stars become unstable. In this paper we extend this study to the nonlinear case, in this case the equation of state is P = a rho(b), in AdS spacetime, where a and b are two constant parameters. For the nonlinear case, the equations of gravitational field are more complicated, so the relation of total mass to the central energy density is numerically investigated. In particular, the effect of the two parameters a and b and the relation between spacetime dimension d, mas
- 出版日期2015-7-10
- 单位西华师范大学
