Evolution of fermion resonance in thick brane  

作　　者：Chun-Chun Zhu Qin Tan Yu-Peng Zhang Yu-Xiao Liu 

机构地区：[1]Institute of Theoretical Physics&Research Center of Gravitation,Lanzhou University,Lanzhou 730000,China [2]Key Laboratory of Quantum Theory and Applications of MoE,Lanzhou University,Lanzhou 730000,China [3]Lanzhou Center for Theoretical Physics&Key Laboratory of Theoretical Physics of Gansu Province,Lanzhou University,Lanzhou 730000,China

出　　处：《Communications in Theoretical Physics》2024年第12期127-137,共11页理论物理通讯(英文版)

基　　金：supported by the National Key Research and Development Program of China(Grant No.2020YFC2201503);the National Natural Science Foundation of China(Grants No.12105126,No.11875151,and No.12247101);the 111Project under(Grant No.B20063);the Fundamental Research Funds for the Central Universities(Grant No.lzujbky2021-pd08);the China Postdoctoral Science Foundation(Grant No.2021M701531);‘Lanzhou City’s scientific research funding subsidy to Lanzhou University’。

摘　　要：In this work,we investigate the numerical evolution of massive Kaluza–Klein(KK)modes of a Dirac field on a thick brane.We deduce the Dirac equation in five-dimensional spacetime,and obtain the time-dependent evolution equation and Schr?dinger-like equation of the extradimensional component.We use the Dirac KK resonances as the initial data and study the corresponding dynamics.By monitoring the decay law of the left-and right-chiral KK resonances,we compute the corresponding lifetimes and find that there could exist long-lived KK modes on the brane.Especially,for the lightest KK resonance with a large coupling parameter and a large three momentum,it will have an extremely long lifetime.

关 键 词：BRANEWORLD fermion resonance dynamic evolution 

分 类 号：O413[理学—理论物理]