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arXiv 2007.05371gr-qchep-th
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高维荷电de Sitter黑洞的辐射谱和有效温度

Radiation Spectra and Effective Temperatures in Higher-Dimensional Charged-de Sitter Black Holes

Supakchai Ponglertsakul, Bogeun Gwak

摘要:

本文研究了在高维Reissner-Nordström-de Sitter黑洞中传播的标量场。假设标量场与膜或体标量曲率具有非最小耦合。讨论了黑洞温度的五种不同定义:基于表面引力的温度、Bousso-Hawking温度和三种有效温度。在粒子和时空性质的影响下,研究了膜上和体中最小和非最小耦合标量场的灰体因子。在不同温度下测定了黑洞的膜通道和体通道的能量发射谱。在Bousso-Hawking温度的能量发射率被发现是占主导地位的那些在其他温度。耦合参数的存在抑制了能量发射曲线。最后计算了体膜辐射比。值得注意的是,对于温度和宇宙学常数的状态的某种定义,体占优成为可能。

英文摘要:

In this study, a scalar field propagating in a higher-dimensional Reissner-Nordström-de Sitter black hole is investigated. Scalar fields are assumed to have non-minimal coupling to the brane or bulk scalar curvature. Five different {definitions} of black hole temperatures are discussed: temperature based on surface gravity, Bousso-Hawking temperature, and three effective temperatures. The greybody factors of minimally and non-minimally coupled scalar fields on the brane and in the bulk are examined under the effect of particle and spacetime properties. The energy emission spectra of black holes are determined at various temperatures for both the brane and bulk channels. The energy emission rates at the Bousso-Hawking temperature are found to be dominant over those at other temperatures. The energy emission curves are suppressed by the presence of coupling parameters. Finally, the bulk-over-brane emission ratios are calculated. Notably, bulk dominance becomes possible for a certain definition of the temperatures and regime of the cosmological constant.

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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