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arXiv 1008.3665hep-thmath-phmath.MPquant-ph
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双场厚膜上的费米子局域化

Fermion localization on two-field thick branes

L. B. Castro

摘要:

Almeida及其合作者[Phys. Rev. D \textbf{79},125022(2009)]在最近发表于该杂志的一篇论文中分析了费米子在由两个与引力耦合的标量场构成的膜(Bloch膜模型)上的费米子局域化问题。在这项有价值的研究中,最简单的汤川耦合$η\barΨϕχΨ$被认为是。在这项工作中没有详细分析零模式。本文重新研究了费米子在双场厚膜上的局域化。发现最简单的汤川耦合不支持费米子在膜上的局域化。此外,还分析了其他几种Yukawa耦合的费米子局域化问题。结果表明,左手和右手费米子的零模可以本地化的膜依赖于耦合常数$η$和Bloch膜的参数$a$的值。

英文摘要:

In a recent paper published in this journal, Almeida and collaborators [Phys. Rev. D \textbf{79}, 125022 (2009)] analyze the issue of fermion localization of fermions on a brane constructed from two scalar fields coupled with gravity (Bloch brane model). In this meritorious research the simplest Yukawa coupling $η\barΨϕχΨ$ was considered. In that work does not analyze the zero mode in details. In this paper, the localization of fermions on two-field thick branes is reinvestigated. It is found that the simplest Yukawa coupling does not support the localization of fermions on the brane. In addition, the problem of fermion localization for some other Yukawa couplings are analyzed. It is shown that the zero mode for left-handed and right-handed fermions can be localized on the brane depending on the values for the coupling constant $η$ and the Bloch brane's parameter $a$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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