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arXiv 1202.1256gr-qchep-thmath-phmath.MP
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变张力膜世界方案中的黑弦修正

Black string corrections in variable tension braneworld scenarios

Roldao da Rocha, J. M. Hoff da SIlva

摘要:

研究了变张力膜世界模型,给出了沿额外维方向对黑弦视界的修正。这样的修正被加密在额外的条款,涉及膜上的可变张力的协变导数,提供了深刻的后果,关于黑弦视界的变化沿额外的维度,膜附近。黑弦视界的行为被证明是由膜变量张力校正的条款大大修改。特别是,一个模型的动机的现象学有趣的情况下,关于Eotvos膜进行了研究。它立即提供了关于可变张力膜世界情景的进一步物理特征,这些特征在以前的所有文献分析中都被掩盖了。以往的分析都只考虑了度规在额外维上的二阶展开,这只能证明膜变量张力的绝对值。尽管如此,膨胀项的后果,进一步完成了本文从第三阶,elelections膜变量张力的连续协变导数,以及它们各自的耦合与外部曲率,Weyl张量,黎曼和里奇张量,以及标量曲率。这些附加项被证明在一个可变张力膜世界的场景中提供了黑弦视界的突然修改

英文摘要:

Braneworld models with variable tension are investigated, and the corrections on the black string horizon along the extra dimension are provided. Such corrections are encrypted in additional terms involving the covariant derivatives of the variable tension on the brane, providing profound consequences concerning the black string horizon variation along the extra dimension, near the brane. The black string horizon behavior is shown to be drastically modified by the terms corrected by the brane variable tension. In particular, a model motivated by the phenomenological interesting case regarding Eotvos branes is investigated. It forthwith provides further physical features regarding variable tension braneworld scenarios, heretofore concealed in all previous analysis in the literature. All precedent analysis considered uniquely the expansion of the metric up to the second order along the extra dimension, what is able to evince solely the brane variable tension absolute value. Notwithstanding, the expansion terms aftermath, further accomplished in this paper from the third order on, elicits the successive covariant derivatives of the brane variable tension, and their respective coupling with the extrinsic curvature, the Weyl tensor, and the Riemann and Ricci tensors, as well as the scalar curvature. Such additional terms are shown to provide sudden modifications in the black string horizon in a variable tension braneworld scenario

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