Kerr-Newman-de Sitter黑洞辐射谱和熵修正

Radiation spectrum of Kerr-Newman-de Sitter black hole and correction to its entropy

本文延拓Damour-Ruffini方法,研究Kerr-Newman-de Sitter黑洞的Hawking辐射.在保持时空中总能量,总角动量和总电荷守恒的条件下,考虑辐射粒子对时空的反作用与黑洞事件视界和宇宙视界的相互关联后,得到了黑洞辐射谱.此辐射不再是严格的纯热谱与黑洞事件视界和宇宙视界对应Bekenstein-Hawking熵变有关.研究发现其结果仍然符合幺正性原理.同时给出了黑洞Bekenstein-Hawking熵的修正项.使人们对黑洞热辐射的研究有了进一步的认识.

We extend the Damour-Ruffini method and discuss Hawking radiation of Kerr-Newman-de Sitter black hole.Under the condition that the total energy and angular momentum of spacetime are conserved,taking the reaction of the radiation of particles to the spacetime into consideration and considering the interrelation between the black hole event horizon and the cosmological horizon,we obtain the black hole radiation spectrum.This radiation is no longer a strictly pure thermal spectrum.It is related to the change in Bekenstein-Hawking（B-H） entropy corresponding to black hole event horizon and the cosmological horizon.It is shown that the result satisfies the unitary principle.We also derive the correction term of B-H entropy.It leads to a new understanding of thermal radiation of the black hole.