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arXiv · 1601.05852

Resonance spectrum of a bulk fermion on branes

Yu-Peng Zhang·Yun-Zhi Du·Wen-Di Guo·Yu-Xiao Liu
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Abstract

It is known that there are two mechanisms for localizing a bulk fermion on a brane, one is the well-known Yukawa coupling and the other is the new coupling proposed in [Phys. Rev. D 89, 086001 (2014)]. In this paper, we investigate localization and resonance spectrum of a bulk fermion on the same branes with the two localization mechanisms. It is found that both the two mechanisms can result in a volcano-like effective potential of the fermion Kaluza-Klein modes. The left-chiral fermion zero mode can be localized on the brane and there exist some discrete massive fermion Kaluza-Klein modes that quasilocalized on the brane (also called fermion resonances). The number of the fermion resonances increases linearly with the coupling parameter.

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Yu-Peng Zhang, Yun-Zhi Du, Wen-Di Guo, Yu-Xiao Liu. 2016-01-22. Resonance spectrum of a bulk fermion on branes. https://doi.org/10.1103/physrevd.93.065042

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