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arXiv 1308.4136hep-thastro-ph.COgr-qc
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解构维度与大质量引力

Deconstructing Dimensions and Massive Gravity

Claudia de Rham, Andrew Matas, Andrew J. Tolley

摘要:

我们表明,鬼免费模型的大质量引力和他们的多引力子扩展遵循考虑高维广义相对论在爱因斯坦-嘉当形式的离散额外的维度,根据维度解构范式。我们表明,维度解构是相当于截断卡鲁扎-克莱因塔在非线性水平。由于依赖于红外物理的低强耦合标度的出现,在连续额外维(无限Kaluza-Klein塔)的极限下,高维引力不能从低维多引力子理论中恢复。这种强耦合尺度与最低卡鲁扎-克莱因模的质量有关,控制着万施泰因机制的开始,对截断理论的理论和观测可行性至关重要。

英文摘要:

We show that the ghost-free models of massive gravity and their multi-graviton extensions follow from considering higher dimensional General Relativity in Einstein-Cartan form on a discrete extra dimension, according to the Dimensional Deconstruction paradigm. We show that Dimensional Deconstruction is equivalent to a truncation of the Kaluza-Klein tower at the nonlinear level. Higher dimensional gravity is not recovered from a lower dimensional multi-graviton theory in the limit of a continuous extra dimension (infinite Kaluza-Klein tower) due to the appearance of a low strong coupling scale that depends on IR physics. This strong coupling scale, which is associated with the mass of the lowest Kaluza-Klein mode, controls the onset of the Vainshtein mechanism and is crucial to the theoretical and observational viability of the truncated theory.

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