论文标题

$ f(r)$重力中的电荷和磁性电荷的黑洞

Black Holes with Electric and Magnetic Charges in $F(R)$ Gravity

论文作者

Nashed, G. G. L., Nojiri, S.

论文摘要

我们在$ f(r)$重力以及电磁场中构建球形对称和静态溶液。解决方案包括带有电荷和磁性电荷的新型黑洞。我们表明,较高的术语使曲率奇点比爱因斯坦(Einstein)一般相对论中带电的黑洞的曲率奇异性要柔软得多。我们计算了所获得的黑洞的一些热力学量,例如熵,鹰辐射和准局部能量,我们确认黑洞溶液满足了热力学的第一定律。最后,我们使用奇数模式研究了稳定性分析,并表明存在稳定的黑洞溶液,而平等-ODD模式的径向速度是单位,即光速。

We construct spherically symmetric and static solutions in $F(R)$ gravity coupled with electromagnetic fields. The solutions include new types of black holes with electric and magnetic charges. We show that the higher-derivative terms make the curvature singularity much softer than that in the charged black holes in Einstein's general relativity. We calculate some thermodynamical quantities of the obtained black holes like entropy, Hawking radiation, and quasi-local energy and we confirm that the black hole solutions satisfy the first law of thermodynamics. Finally, we study the stability analysis using the odd-type mode and show that there are stable black hole solutions and the radial speed of the parity-odd mode is unit, that is, the speed of light.

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