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arXiv 0909.2312hep-th
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多场厚膜上的费米子共振

Fermion Resonances on Multi-field Thick Branes

Yu-Xiao Liu, Hai-Tao Li, Zhen-Hua Zhao, Jing-Xin Li, Ji-Rong Ren

摘要:

受最近标量厚膜上费米子共振研究的启发(arXiv:0901.3543和arXiv:0904.1785),我们将这一思想推广到多标量厚膜上,完成了以前的工作.研究了三场和二场厚膜上的费米子局域化和共振态。利用Numerov方法,我们的数值计算结果表明,除了单场厚膜和双场厚膜外,膜中还存在共振态。这种有趣的现象与膜的内部结构以及费米子和标量的耦合有关。我们发现大质量费米子共振态的Kaluza-Klein手征分解是宇称手征分解。对于耦合$η\barΨϕ^{k}χρΨ$和$η\barΨϕ^{k}χρΨ$的三场和两个场模型与奇数正$k$,分别,谐振态的数量减少与$k$。这个结果与在单场de Sitter厚膜中得到的结果(arXiv:0904.1785)相反。

英文摘要:

Motivated by the recent work on the fermion resonances on scalar-constructed thick branes (arXiv:0901.3543 and arXiv:0904.1785), we extend the idea to multi-scalar generated thick branes and complete previous work. The fermion localization and resonances on the three-field and two-field thick branes are investigated. With the Numerov method, our numerical results show that the resonance states also exist in the brane besides the single-field thick branes and the two-field thick branes in the former cases. This interesting phenomenon is related to the internal structure of the brane and the coupling of fermions and scalars. We find that the Kaluza-Klein chiral decomposition of massive fermion resonances is the parity-chiral decomposition. For the couplings $η\barΨϕ^{k}χρΨ$ and $η\barΨϕ^{k}χρΨ$ for three-field and two-field models with odd positive $k$, respectively, the number of the resonant states decreases with $k$. This result is opposite to the one obtained in the single-field de Sitter thick brane (arXiv:0904.1785).

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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