Numerical analysis of black hole evaporation.
Numerical analysis of black hole evaporation.
复制标题
黑洞蒸发的数值分析。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
A. Strominger
中科院分区：
文献类型：
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作者：
T. Piran;A. Strominger
在物质场的数量[italN]变大的极限下，二维重子引力中黑洞的形成和/或蒸发可以用一组二阶偏微分方程来描述。在本文中，我们解决这些方程的数值。结果表明，与以前的一些建议相反，黑洞在形成后的有限时间内完全蒸发。需要一个边界条件来使系统在蒸发终点处演化到裸奇点之外。有人认为，这可能是自然选择，以恢复系统的真空。分析也适用于低能量散射的[italS]-波费米子四维极端，磁性，电子黑洞。
Black hole formation and/or evaporation in two-dimensional dilaton gravity can be described, in the limit where the number [ital N] of matter fields becomes large, by a set of second-order partial differential equations. In this paper we solve these equations numerically. It is shown that, contrary to some previous suggestions, black holes evaporate completely a finite time after formation. A boundary condition is required to evolve the system beyond the naked singularity at the evaporation end point. It is argued that this may be naturally chosen so as to restore the system to the vacuum. The analysis also applies to the low-energy scattering of [ital S]-wave fermions by four-dimensional extremal, magnetic, dilatonic black holes.