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arXiv 1002.0011hep-phhep-th
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扭曲额外维中的标量扭结

Scalar Kinks in Warped Extra Dimensions

Manuel Toharia, Mark Trodden, Eric J. West

摘要:

研究了具有Dirichlet边界条件的5D标量场在弯曲膜世界的额外维度上的静态扭结状组态的存在性和稳定性。在引力存在的情况下,这样的配置无法稳定额外维度的大小,导致我们考虑额外的标量场与稳定的作用。我们数值识别多个非平凡的解决方案,一个给定的5D行动,可能的背景方程的非线性性质,我们发现在重力的存在下增强。最后,我们采取了第一步解决的问题,这种配置的稳定性推导出完整的微扰方程的引力耦合多场系统。

英文摘要:

We study the existence and stability of static kink-like configurations of a 5D scalar field, with Dirichlet boundary conditions, along the extra dimension of a warped braneworld. In the presence of gravity such configurations fail to stabilize the size of the extra dimension, leading us to consider additional scalar fields with the role of stabilization. We numerically identify multiple nontrivial solutions for a given 5D action, made possible by the nonlinear nature of the background equations, which we find is enhanced in the presence of gravity. Finally, we take a first step towards addressing the question of the stability of such configurations by deriving the full perturbative equations for the gravitationally coupled multi-field system.

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