Greybody factors for rotating black holes on codimension-2 branes

Greybody factors for rotating black holes on codimension-2 branes
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余维 2 膜上旋转黑洞的灰体因子

DOI:
10.1088/1126-6708/2008/03/019
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发表时间:
2007-11
影响因子:
5.4
通讯作者:
Su, Rukeng
Su, Rukeng
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Wang, Bin;Hwang, W. -Y. Pauchy;Chen, Songbai;Su, Rukeng

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研究了余维2膜上旋转黑洞标量场的吸收几率和Hawking辐射。我们发现,有限膜张力修改霍金辐射的标准结果相比,当膜张力是完全可以忽略的情况下。我们观察到黑洞的旋转带来了更丰富的物理学。非零的角动量触发超辐射,当角动量增加时,超辐射变得更强。我们还发现,旋转沿着不同的角度影响的吸收几率和霍金辐射的结果。与垂直于膜旋转的黑洞相比,在黑洞在膜上旋转的背景下,黑洞的角动量带来的超辐射效应较小,而膜张力增大了容纳超辐射的频率范围。这些信息可以帮助我们更多地了解旋转余维2黑洞。
We study the absorption probability and Hawking radiation of the scalar field in the rotating black holes on codimension-2 branes. We find that finite brane tension modifies the standard results in Hawking radiation if compared with the case when brane tension is completely negligible. We observe that the rotation of the black hole brings richer physics. Nonzero angular momentum triggers the super-radiance which becomes stronger when the angular momentum increases. We also find that rotations along different angles influence the result in absorption probability and Hawking radiation. Compared with the black hole rotating orthogonal to the brane, in the background that black hole spins on the brane, its angular momentum brings less super-radiance effect and the brane tension increases the range of frequency to accommodate super-radiance. These information can help us know more about the rotating codimension-2 black holes.
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