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arXiv 1312.3597gr-qchep-th
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Horndeski理论中的渐近局部AdS和平黑洞

Asymptotically locally AdS and flat black holes in Horndeski theory

Andres Anabalon, Adolfo Cisterna, Julio Oliva

摘要:

在本文中,我们构造渐近局部AdS和平坦的黑洞的标量场的动力学项的存在下构造出的线性组合的度量和爱因斯坦张量。场方程以及能量-动量张量在度规和场中都是二阶的,因此该理论属于Horndeski定义的理论。我们证明了在作用量中存在宇宙学项的情况下,在事件视界外的区域有可能存在实标量场。这些解的特征在于只有一个积分常数,标量场在视界处为零,它对无穷远处的有效宇宙学常数有贡献。我们将这些结果推广到拓扑的情况。该解与最大对称AdS背景无关,但在该解族中存在处处正则的引力孤子。因此,这个孤立子被用来作为一个背景,以定义一个有限的欧几里德行动,并获得热力学的黑洞。在参数空间的某一区域,热力学分析揭示了一个临界温度,在该温度下,黑洞和孤子发生Hawking-Page相变.我们将该解扩展到大于四的任意维度,并表明作用量中宇宙学项的存在允许考虑标量的标准动力学项不存在的情况。在这样的情况下,该解决方案减少到一个渐近平坦的黑洞。

英文摘要:

In this paper we construct asymptotically locally AdS and flat black holes in the presence of a scalar field whose kinetic term is constructed out from a linear combination of the metric and the Einstein tensor. The field equations as well as the energy-momentum tensor are second order in the metric and the field, therefore the theory belongs to the ones defined by Horndeski. We show that in the presence of a cosmological term in the action, it is possible to have a real scalar field in the region outside the event horizon. The solutions are characterized by a single integration constant, the scalar field vanishes at the horizon and it contributes to the effective cosmological constant at infinity. We extend these results to the topological case. The solution is disconnected from the maximally symmetric AdS background, however, within this family there exits a gravitational soliton which is everywhere regular. This soliton is therefore used as a background to define a finite Euclidean action and to obtain the thermodynamics of the black holes. For a certain region in the space of parameters, the thermodynamic analysis reveals a critical temperature at which a Hawking-Page phase transition between the black hole and the soliton occurs. We extend the solution to arbitrary dimensions grater than four and show that the presence of a cosmological term in the action allows to consider the case in which the standard kinetic term for the scalar it's not present. In such scenario, the solution reduces to an asymptotically flat black hole.

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。

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