Black holes and dark energy from gravitational collapse on the brane
Black holes and dark energy from gravitational collapse on the brane
复制标题
黑洞和膜上引力塌缩产生的暗能量
DOI:
10.1088/1475-7516/2007/02/027
复制
发表时间:
2006
影响因子:
6.4
通讯作者:
L. Gergely
中科院分区:
文献类型:
--
作者:
L. Gergely
The gravitational collapse of a pressureless fluid in general relativity (Oppenheimer–Snyder collapse) results in a black hole. The study of the same phenomenon in the brane-world scenario has shown that the exterior of the collapsing dust sphere cannot be static. We show that by allowing for pressure, the exterior of a fluid sphere can be static. The gravitational collapse on the brane proceeds according to the modified gravitational dynamics, turning the initial nearly dust-like configuration into a fluid with tension. The tension arises from the nonlinearity of the dynamical equations in the energy–momentum tensor, and it vanishes in the general relativistic limit. Below the horizon the tension turns the star into dark energy. This transition occurs right below the horizon for astrophysical black holes and far beyond the horizon for intermediate mass and galactic black holes. Further, both the energy density and the tension increase towards infinite values during the collapse. The infinite tension, however, could not stop the formation of the singularity.
DOI:
--
发表时间:
2004
期刊:
Phys.Rev. D69
影响因子:
--
作者:
Kei-ichi Maeda;Takashi Torii
通讯作者:
Takashi Torii