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arXiv 0906.2528gr-qcmath.DG
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渐开、最小、外部且日益被困的表面

Involute, minimal, outer and increasingly trapped surfaces

Sean A. Hayward

摘要:

八种不同的改进被困的表面,提出了三种基本类型,每一种都是潜在的稳定条件。最小捕获曲面是关于对偶展开向量的严格最小曲面。外捕获表面具有与表面重力相关的一定曲率的正性。越来越多的(未来的,过去的)被捕获的表面生成更多地被捕获在(未来的,过去的)因果变化中的表面,有三种类型:在任何这样的因果变化中,沿着扩展向量,以及在一些这样的因果变化中。这就提出了一个包含两个独立曲率的双外捕获曲面的定义。这反过来又提出了渐开线捕获曲面的定义。加上一个较弱的条件,八个条件形成一个交织的层次,有四个独立的关系,假设零能量条件,另一个在对称曲率的特殊情况下成立。

英文摘要:

Eight different refinements of trapped surfaces are proposed, of three basic types, each intended as potential stability conditions. Minimal trapped surfaces are strictly minimal with respect to the dual expansion vector. Outer trapped surfaces have positivity of a certain curvature, related to surface gravity. Increasingly (future, respectively past) trapped surfaces generate surfaces which are more trapped in a (future, respectively past) causal variation, with three types: in any such causal variation, along the expansion vector, and in some such causal variation. This suggests a definition of doubly outer trapped surface involving two independent curvatures. This in turn suggests a definition of involute trapped surface. Adding a weaker condition, the eight conditions form an interwoven hierarchy, with four independent relations which assume the null energy condition, and another holding in a special case of symmetric curvature.

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。

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