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arXiv 2010.04858gr-qcastro-ph.HE
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四维扩展标量张量高斯博内特理论中一种新的精确磁黑洞解

A novel exact magnetic black hole solution in four-dimensional extended scalar-tensor-Gauss-Bonnet theory

Pedro Cañate, Santiago Esteban Perez Bergliaffa

摘要:

在这项工作中,第一个精确的渐近平坦的静态和球对称黑洞解的$(3+1)$维ESTGB的,与非线性电动力学模型-减少到麦克斯韦理论在弱场极限和满足弱能量条件-作为一个源。该溶液具有非零磁荷和标量头发,这证明是依赖于磁荷。其特征在于ADM质量$m$和磁荷$q$。根据这些参数的取值范围,该解描述了具有不同结构的黑洞。在$m\geq0$和$q\geq0$的情况下,它具有史瓦西解的许多特征。对于$m>0$和$q<0$,它类似于Reissner-Nordström度量。在$m=0$的例子中,它代表一个纯磁性黑洞。

英文摘要:

In this work the first exact asymptotically flat static and spherically symmetric black hole solution for $(3+1)$-dimensional ESTGB is presented, with a model of nonlinear electrodynamics -- that reduces to Maxwell's theory in the weak field limit and satisfies the weak energy condition -- as a source. The solution has a nonzero magnetic charge, and scalar hair, which turns out to be dependent of the magnetic charge. It is characterized by the ADM mass $m$ and the magnetic charge $q$. Depending on the range of these parameters, the solution describes black holes with different structure. In the case $m\geq0$ and $q\geq0$, it shares many of the characteristics of the Schwarzschild solution. For $m>0$ and $q<0$, it is akin to the Reissner-Nordström metric. In the case $m=0$, it represents a purely magnetic black hole.

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