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arXiv 0704.3784gr-qc
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与Born-Infeld非线性电动力学耦合的标量张量黑洞

Scalar-tensor black holes coupled to Born-Infeld nonlinear electrodynamics

Ivan Zh. Stefanov, Stoytcho S. Yazadjiev, Michail D. Todorov

摘要:

在一类标量张量理论中,证明了在非平凡标量场作用下Maxwell电动力学中不存在渐近平坦中性黑洞和渐近平坦带电黑洞.然而,无标毛定理不适用于非线性电动力学的情况。本文给出了无质量标量场引力标量-张量理论中描述带电黑洞与Born-Infeld型非线性电动力学耦合的数值解,研究了解的因果结构和性质,并与广义相对论中的相应解进行了比较。标量场的存在导致了一个简单得多的因果结构。目前这类黑洞有一个单一的、非退化的视界,即,它的因果结构类似于史瓦西黑洞。

英文摘要:

The non-existence of asymptotically flat, neutral black holes and asymptotically flat, charged black holes in the Maxwell electrodynamics, with non-trivial scalar field has been proved for a large class of scalar-tensor theories. The no-scalar-hair theorems, however, do not apply in the case of non-linear electrodynamics. In the present work numerical solutions describing charged black holes coupled to Born-Infeld type non-linear electrodynamics in scalar-tensor theories of gravity with massless scalar field are found. The causal structure and properties of the solutions are studied, and a comparison between these solutions and the corresponding solutions in the General Relativity is made. The presence of the scalar field leads to a much more simple causal structure. The present class of black holes has a single, non-degenerate horizon, i.e., its causal structure resembles that of the Schwarzschild 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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