标题： 标量-张量耦合的Born-Infeld非线性电动力学黑洞 显示英文标题

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

摘要： 在麦克斯韦电动力学中，对于具有非平凡标量场的渐近平坦中性黑洞和渐近平坦带电黑洞的不存在性已被证明适用于大量标量-张量理论。然而，无标量场定理不适用于非线性电动力学的情况。在本工作中，发现了描述与标量-张量引力理论中无质量标量场耦合的Born-Infeld型非线性电动力学的带电黑洞的数值解。研究了解的因果结构和性质，并将这些解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更加简单的因果结构。目前这一类黑洞具有单一的非简并视界，即其因果结构类似于施瓦茨希尔德黑洞。 显示英文摘要

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.