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arXiv 0708.3203gr-qc
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耦合到Euler-Heisenberg非线性电动力学的标量张量黑洞

Scalar-tensor black holes coupled to Euler-Heisenberg nonlinear electrodynamics

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

摘要:

对于一大类理论来说,无标量毛猜想排除了具有标量修饰的渐进平坦黑洞的存在。在Maxwell电动力学中,中性黑洞和带电黑洞的情形证明了无标毛定理。然而,这些定理不适用于非线性电动力学的情况。本文给出了描述带电黑洞与Euler-Heisenberg型非线性电动力学耦合的无质量标量场标量-张量引力理论的数值解,与广义相对论中的相应解相比,所给出的解具有更简单的因果结构,其原因是标量场的存在。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 no-scalar-hair conjecture rules out the existence of asymptotically flat black holes with a scalar dressing for a large class of theories. No-scalar-hair theorems have been proved for the cases of neutral black holes and for charged black holes in the Maxwell electrodynamics. These theorems, however, do not apply in the case of non-linear electrodynamics. In the present work numerical solutions describing charged black holes coupled to Euler-Heisenberg type non-linear electrodynamics in scalar-tensor theories of gravity with massless scalar field are found. In comparison to the corresponding solution in General Relativity the presented solution has a simpler causal structure the reason for which is the presence of the scalar field. 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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