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arXiv 0705.1157hep-th
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六维弯曲超引力中的引力子

Gravitino in six-dimensional warped supergravity

Hyun Min Lee, Antonios Papazoglou

摘要:

我们考虑在特定的六维规范超引力中一般翘曲解的引力子谱。我们发现,尽管在锥形奇点处引入的膜张力明显破坏了体超对称性,但由于U(1)R规范通量的非零性,引力子的无质量模可以以非平凡的波函数轮廓存在。我们还计算了引力子的Kaluza-Klein质量模的波函数和质量谱。我们表明,引入引力子质量项的正则膜可以得到一个抑制的有效引力子质量相比,紧化尺度,由于离域的波函数的零模引力子。

英文摘要:

We consider the gravitino spectrum for the general warped solution in a specific six-dimensional gauged supergravity. We find that although the brane tensions introduced at the conical singularities break the bulk supersymmetry explicitly, massless modes of gravitino can exist with a nontrivial wave function profile, due to a nonzero U(1)_R gauge flux. We also compute the wave function and the mass spectrum of Kaluza-Klein massive modes of the gravitino explicitly. We show that the introduction of a gravitino mass term on a regularized brane can give a suppressed effective gravitino mass compared to the compactification scale, due to the delocalization of the wave function of the zero-mode gravitino.

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