arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.0202gr-qchep-th
收藏

Schwarzschild黑洞中自由降落的能量密度和通量

Free-fall energy density and flux in the Schwarzschild black hole

Wontae Kim, Bibhas Ranjan Majhi

摘要:

在四维Schwarzschild黑洞背景下,我们研究了Boulware,Unruh和Israel-Hartle-Hawking态在自由下落坐标系下的能量密度和通量.特别地,我们利用共形不变标量场的迹反常研究了它们在视界附近和渐近无穷远的行为。在Boulware态下,当观测者落在视界时,能量密度和通量都是负发散的,并且渐近地为零。在Unruh态中,能量密度在视界处也是负发散的,但它是渐近正有限的。Unruh态的通量在视界处总是正的和发散的。在Israel-Hartle-Hawking态中,能量密度依赖于自由降落的角运动,通量在视界和空间无穷远处消失。最后讨论了视界附近的负能量密度在蒸发黑洞中的作用。

英文摘要:

In the four-dimensional background of Schwarzschild black hole, we investigate the energy densities and fluxes in the freely falling frames for the Boulware, Unruh, and Israel-Hartle-Hawking states. In particular, we study their behaviors near the horizon and asymptotic spatial infinity by using the trace anomaly of a conformally invariant scalar field. In the Boulware state, both the energy density and flux are negative divergent when the observer is dropped at the horizon, and asymptotically vanish. In the Unruh state, the energy density is also negative divergent at the horizon while it is positive finite asymptotically. The flux in the Unruh state is always positive and divergent at the horizon. In the Israel-Hartle-Hawking state, the energy density depends on the angular motion of free fall, and fluxes vanish at the horizon and the spatial infinity. Finally, we discuss the role of the negative energy density near the horizon in the evaporating black hole.

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。

↑