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arXiv 0709.3428hep-thhep-ph
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Randall-Sundrum模型中的体反对称张量场

Bulk antisymmetric tensor fields in a Randall-Sundrum model

Biswarup Mukhopadhyaya, Somasri Sen, Soumitra SenGupta

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8 Pages, Latex
发表信息：
Phys.Rev.D76:121501,2007
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摘要：

我们考虑Randall-Sundrum情形中不同秩的体反对称张量场。我们表明，秩-2向前，这些领域的（3+1）维可见膜上的投影的零模式变得越来越弱，作为张量的秩增加。在四维动力学中不存在所有这样的秩为4或更高的张量场。这使得只有零模引力子与物质发生$\sim 1/M_P$耦合，从而解释了为什么宇宙的大尺度行为只受引力支配。我们还计算了质量较重的模式高达3级，并表明，他们是相对不太可能有可检测的加速器信号。

英文摘要：

We consider bulk antisymmetric tensor fields of various ranks in a Randall-Sundrum scenario. We show that, rank-2 onwards, the zero-modes of the projections of these fields on the (3+1) dimensional visible brane become increasingly weaker as the rank of the tensor increases. All such tensor fields of rank 4 or more are absent from the dynamics in four dimensions. This leaves only the zero-mode graviton to have coupling $\sim 1/M_P$ with matter, thus explaining why the large-scale behaviour of the universe is governed by gravity only. We have also computed the masses of the heavier modes upto rank-3, and shown that they are relatively less likely to have detectable accelerator signals.

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