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arXiv 0811.2029gr-qchep-th
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静磁学和强子引力中双Reissner-Nordstrom解的类似物:数学描述和某些物理性质

Analogs of the double-Reissner-Nordstrom solution in magnetostatics and dilaton gravity: mathematical description and some physical properties

V. S. Manko, E. Ruiz, J. Sanchez-Mondragon

摘要:

本文考虑了双Reissner-Nordstrom解的一个磁模拟,并构造了相应的磁位A_φ的显式表达式。哈里森变换下的解的行为自然地挑出了非对称黑洞--由两个质量不等、电荷大小相等但符号相反的非极端黑洞组成的结构--作为其最一般的子类,在外部磁场(或电场)的帮助下可以实现黑洞成分的平衡。我们还将双Reissner-Nordstrom解推广到任意耦合的双曲子引力,得到了四维双Gibbons-Maeda时空。对所得到的解的某些物理性质的研究,特别导出了关于视界面积和表面重力的非常简单的公式。

英文摘要:

In this paper we consider a magnetic analog of the double-Reissner-Nordstrom solution and construct the corresponding magnetic potential A_φin the explicit form. The behavior of the resulting solution under the Harrison transformation then naturally singles out the asymmetric black diholes - configurations composed of two non-extreme black holes possessing unequal masses, and charges equal in magnitude but opposite in sign - as its most general subclass for which equilibrium of the black-hole constituents can be achieved with the aid of the external magnetic (or electric) field. We also generalize the double-Reissner-Nordstrom solution to the dilaton gravity with arbitrary dilaton coupling, yielding as the result the 4-dimensional double-Gibbons-Maeda spacetime. The study of some physical properties of the solutions obtained leads, in particular, to very simple formulas for the areas of the horizons and surface gravities.

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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