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arXiv 1104.4857hep-thhep-ph
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作为膜世界的自引力非阿贝尔扭结

Self-gravitating non-abelian kinks as brane worlds

Alejandra Melfo, Roger Naranjo, Nelson Pantoja, Aureliano Skirzewski, Juan Carlos Vasquez

摘要:

本文讨论了SU(N)xZ_2对称理论破缺时产生的自引力畴壁的性质。在N=5的特殊情况下,我们发现在平坦空间中可能存在的两类稳定的非阿贝尔扭结在引力情况下有类似的情况,并构造了解析解。研究了费米子场在这些膜的规范群的不同表示中的局域化。它还表明,非阿贝尔规范场本地化不能通过与膜的相互作用,但在这两类扭结本地化可以通过Dvali-Shifman机制实现。

英文摘要:

We address the properties of self-gravitating domain walls arising from the breaking of an SU(N) x Z_2- symmetric theory. In the particular case of N=5, we find that the two classes of stable non-abelian kinks possible in flat space have an analogue in the gravitational case, and construct the analytical solutions. Localization of fermion fields in different representations of the gauge group in these branes is investigated. It is also shown that non-abelian gauge fields localization cannot be achieved through interactions with the brane, but that in one of the two classes of kinks this localization can be implemented via the Dvali-Shifman mechanism.

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