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arXiv 1104.5402hep-th
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厚膜上质量变化对费米子局域化的影响

Effect of the variation of mass on fermion localization on thick branes

Luis B. Castro, Luis A. Meza

摘要:

在最近发表在该杂志上的一篇论文中,Zhao及其合作者[Phys. Rev. D \textbf{82},084030(2010)]分析了由具有势$V(ϕ)=aϕ^{2}-bϕ^{4}+cϕ^{6}$的实标量场生成的厚膜玩具模型,并研究了膜上质量参数$a$的变化以及费米子的局部化和共振。在该研究中,考虑了最简单的汤川耦合$η\barΨϕΨ$。在该工作中没有详细分析零模式,也包含一些误解。本文重新研究了质量参数$a$的变化对膜的影响,并将其与膜分裂现象联系起来。此外,它表明,零模的左手费米子可以本地化的膜依赖于耦合常数$η$和质量参数$a$的值。

英文摘要:

In a recent paper published in this journal, Zhao and collaborators [Phys. Rev. D \textbf{82}, 084030 (2010)] analyze a toy model of thick branes generated by a real scalar field with the potential $V(ϕ)=aϕ^{2}-bϕ^{4}+cϕ^{6}$, and investigate the variation of the mass parameter $a$ on the branes as well as the localization and resonances of fermions. In that research the simplest Yukawa coupling $η\barΨϕΨ$ was considered. In that work does not analyze the zero mode in details and also contains some misconceptions. In this paper, the effect of the variation of the mass parameter $a$ on the brane is reinvestigated and it is associated to the phenomenon of brane splitting. Furthermore, it is shown that the zero mode for the left-handed fermions can be localized on the brane depending on the values for the coupling constant $η$ and the mass 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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