arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0710.1735hep-thgr-qc
收藏

具有自相互作用共形耦合标量场的静态黑洞解

Static black hole solutions with a self interacting conformally coupled scalar field

Gustavo Dotti, Reinaldo J. Gleiser, Cristian Martinez

摘要:

研究了具有正宇宙学常数和共形耦合自相互作用标量场的爱因斯坦方程的静态球对称黑洞解。这个模型的精确解由Mart{\'nez},Troncoso和Zanelli(MTZ)发现,随后被证明在线性扰动下是不稳定的,模式发散任意快。我们发现,静态的,球对称的解决方案,有一个定期的地平线-和满足弱和主导的能量条件的地平线外-的模空间是一个奇异的二维空间的子集参数化的地平线半径和值的标量场在地平线上。这个解空间的奇异性为MTZ时空的不稳定性提供了一个解释,并导致这样的结论:如果我们将稳定性作为一个标准,那么对于这个在事件视界外部包含宇宙视界的系统,没有物理上可接受的黑洞解。

英文摘要:

We study static, spherically symmetric black hole solutions of the Einstein equations with a positive cosmological constant and a conformally coupled self interacting scalar field. Exact solutions for this model found by Mart{\'ı}nez, Troncoso, and Zanelli, (MTZ), were subsequently shown to be unstable under linear perturbations, with modes that diverge arbitrarily fast. We find that the moduli space of static, spherically symmetric solutions that have a regular horizon -and satisfy the weak and dominant energy conditions outside the horizon- is a singular subset of a two dimensional space parameterized by the horizon radius and the value of the scalar field at the horizon. The singularity of this space of solutions provides an explanation for the instability of the MTZ spacetimes, and leads to the conclusion that, if we include stability as a criterion, there are no physically acceptable black hole solutions for this system that contain a cosmological horizon in the exterior of its event horizon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑