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六维$q$-形式场通过引力耦合约化为四维场

Reduction of the six-dimensional $q$-form fields to the four-dimensional fields by coupling with gravity

Yong-Tao Lu, Heng Guo, Qun Wei, Bing Wei

arXiv 2609.18277首次发表:更新:

发表机构

School of Physics, Xidian University(西安电子科技大学物理学院)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本文研究六维$q$-形式场在余维二膜上通过引力耦合的局域化,发现无质量模式在正耦合参数下可局域化,有质量模式局域化取决于$t_2$,并排除快子模式。

AI 中文摘要

在本文中,我们研究了各种$q$-形式场在余维二膜上的局域化。特别地,我们考虑了$0$-形式标量场、$1$-形式$U(1)$规范矢量场和$2$-形式Kalb-Ramond场与引力的耦合,其中在六维作用量中引入了耦合函数$F(R)$。函数$F(R)$依赖于体时空的标量曲率。在此框架下,我们发现对于耦合参数$t_1$和$t_2$的正值,不同$q$-形式场的无质量模式可以局域化在厚膜上。对于有质量模式,不同的$q$-形式场表现出由耦合参数$t_2$决定的相似局域化性质。当$0<t_2<v^2/24$时,这些场的有质量模式不能局域化在膜上,但它们可能作为共振模式存在。在$t_2=v^2/24$的情况下,有限数量的有质量模式可以局域化在厚膜上,且局域化模式的数量随耦合参数$t_1$的增加而增加。最后,当$t_2>v^2/24$时,与这些$q$-形式场的Kaluza-Klein模式相关的有效势形成无限深的势阱,因此所有有质量模式都可以局域化在膜上。此外,对于不同的$q$-形式场,快子有质量模式总是可以被排除。

英文摘要

In this paper, we investigate the localization of various $q$-form fields on a codimension-two brane. In particular, the $0$-form scalar field, the $1$-form $U(1)$ gauge vector field, and the $2$-form Kalb-Ramond field are considered with gravitational coupling, where a coupling function $F(R)$ is introduced into the six-dimensional actions of these fields. The function $F(R)$ depends on the scalar curvature of the bulk. Within this framework, we find that the massless modes of different $q$-form fields can be localized on the thick brane for positive values of the coupling parameters $t_1$ and $t_2$. For the massive modes, the different $q$-form fields exhibit similar localization properties determined by the coupling parameter $t_2$. When $0<t_2<v^2/24$, the massive modes of these fields cannot be localized on the brane, while they may exist as the resonant modes. In the case $t_2=v^2/24$, a finite number of massive modes can be localized on the thick brane, and the number of localized modes increases with the coupling parameter $t_1$. Finally, when $t_2>v^2/24$, the effective potentials associated with the Kaluza-Klein modes of these $q$-form fields form infinitely deep potential wells, so that all massive modes can be localized on the brane. Moreover, the tachyonic massive modes can always be excluded for different $q$-form fields.

Comments36 pages, 15 figures

论文原文

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