Formation of three-dimensional black strings from gravitational collapse of dust cloud

被引:5
|
作者
Hyun, Seungjoon [1 ]
Jeong, Jaehoon
Kim, Wontae
Oh, John J.
机构
[1] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120479, South Korea
[2] Sogang Univ, Dept Phys, Seoul 121742, South Korea
[3] Sogang Univ, Ctr Quantum Space Time, Seoul 121742, South Korea
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 04期
关键词
black holes in string theory; classical theories of gravity; spactime singularities;
D O I
10.1088/1126-6708/2007/04/088
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study the formation of black strings from a gravitational collapse of cylindrical dust clouds in the three-dimensional low-energy string theory. New junction conditions for the dilaton as well as two junction conditions for metrics and extrinsic curvatures between both regions of the clouds are presented. As a result, it is found that the collapsing dust cloud always collapses to a black string within a finite collapse time, and then a curvature singularity formed at origin is cloaked by an event horizon. Moreover, it is also shown that the collapse process can form a naked singularity within finite time, regardless of the choice of initial data.
引用
收藏
页数:15
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