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arXiv 0711.4422hep-th
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Einstein-Maxwell-Dilaton引力中的旋转黑洞

Rotating Black Holes in Einstein-Maxwell-Dilaton Gravity

Ahmad Sheykhi

摘要:

在$(n+1)$维$(n\geq3)$ Einstein-Maxwell-Einquon引力中,当Einstein-Maxwell-Einquon场为Liouville型势且Einstein-Maxwell-Einquon耦合常数为任意值时,给出了一类新的慢旋转黑洞解.由于声子场的存在,这些解的渐近行为既不是平坦的,也不是(A)dS。在没有光子场的情况下,我们的解对于小的旋转参数\cite{Aliev2}简化为$(n+1)$维Kerr-Newman修正。我们还计算了这些旋转的黑洞在黑洞上的角动量和旋磁比。

英文摘要:

We present a new class of slowly rotating black hole solutions in $(n+1)$-dimensional $(n\geq3)$ Einstein-Maxwell-dilaton gravity in the presence of Liouville-type potential for the dilaton field and an arbitrary value of the dilaton coupling constant. Because of the presence of the dilaton field, the asymptotic behaviour of these solutions are neither flat nor (A)dS. In the absence of a dilaton field, our solution reduces to the $(n+1)$-dimensional Kerr-Newman modification thereof for small rotation parameter \cite{Aliev2}. We also compute the angular momentum and the gyromagnetic ratio of these rotating dilaton black holes.

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