Stellar collapse without singularities
Stellar collapse without singularities
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无奇点的恒星塌缩
DOI：
10.1103/physrevd.28.1265
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发表时间：
1983
影响因子：
5
通讯作者：
P. Bergmann
中科院分区：
文献类型：
--
作者：
T. A. Roman;P. Bergmann
为了使霍金和彭罗斯的奇点定理成立，物质的应力-能量张量必须满足一定的限制。一个模型的开发代表内部的崩溃，球对称云的物质，这是无处不在的奇点，由于放松所谓的“弱能量条件。“模型中必须违反条件的区域，以及由此产生的物质和能量的性质，都是确定的。这些迹象表明，至少在涉及非常大质量的球对称情况下，在密度不大于正常物质密度的区域中，能量条件必须被违反，这在物理上似乎是不可信的。因此，暂停能量条件可能不是避免奇点的合理方法。
For the singularity theorems of Hawking and Penrose to hold, the stress-energy tensor of matter must satisfy certain restrictions. A model is developed representing the interior of a collapsing, spherically symmetric cloud of matter, which is everywhere free of singularities, due to a relaxation of the so-called ''weak energy condition.'' The regions of the model in which the condition must be violated, and the properties of matter and energy which result, are determined. The indications are that, at least in spherically symmetric cases involving very large masses, the energy condition must be violated in a region where the density is no larger than normal matter densities, which seems physically implausible. Hence suspending the energy conditions may not be a reasonable approach to the avoidance of singularities.