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arXiv 0912.3590hep-th
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具有非阿贝尔取向模的畴壁

Domain walls with non-Abelian orientational moduli

Minoru Eto, Toshiaki Fujimori, Muneto Nitta, Keisuke Ohashi, Norisuke Sakai

摘要:

在与简并质量的Higgs标量场耦合的U(N)规范理论中构造了具有非阿贝尔取向模的畴壁。相关联的整体对称性被畴壁打破,产生了南武-戈德斯通(和准南武-戈德斯通)玻色子,它们形成了非阿贝尔取向模量。当畴壁分离时,非阿贝尔取向模量的波函数在畴壁之间传播。通过取Higgs质量差的极限为零,阐明了壁面位置模量向非阿贝尔取向模量的转化。构造了畴壁上有效场论的模空间度规及其Kahler势。我们考虑两种模型:在基本表象中,有多个荷电Higgs场的U(1)规范理论和有2N个荷电Higgs场的U(N)规范理论。更多的细节可以在我们发表于Phys.Rev.D77(2008)125008 [arXiv:0802.3135 [hep-th]]的论文中找到。

英文摘要:

Domain walls with non-Abelian orientational moduli are constructed in U(N) gauge theories coupled to Higgs scalar fields with degenerate masses. The associated global symmetry is broken by the domain walls, resulting in the Nambu-Goldstone (and quasi-Nambu-Goldstone) bosons, which form the non-Abelian orientational moduli. As walls separate, the wave functions of the non-Abelian orientational moduli spread between domain walls. By taking the limit of Higgs mass differences to vanish, we clarify the convertion of wall position moduli into the non-Abelian orientational moduli. The moduli space metric and its Kahler potential of the effective field theory on the domain walls are constructed. We consider two models: a U(1) gauge theory with several charged Higgs fields, and a U(N) gauge theory with 2N Higgs fields in the fundamental representation. More details are found in our paper published in Phys. Rev. D77 (2008) 125008 [arXiv:0802.3135 [hep-th]].

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