Evolution of scalar field resonances in a braneworld

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作者：
Qin Tan
Yu-Peng Zhang
Wen-Di Guo
Jing Chen
Chun-Chun Zhu
Yu-Xiao Liu
机构：
[1] Lanzhou University,Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou Center for Theoretical Physics, School of Physical Science and Technology
[2] Lanzhou University,Institute of Theoretical Physics and Research Center of Gravitation
来源：
The European Physical Journal C | / 83卷
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摘要：
In this work, we investigate the numerical evolution of massive Kaluza–Klein (KK) modes of a scalar field in a thick brane. We derive the Klein–Gordon equation in five-dimensional spacetime, and obtain the evolution equation and the Schrödinger-like equation. With the resonances of the scalar KK modes as the initial data, the scalar field is evolved with the maximally dissipative boundary condition. The results show that there are scalar KK resonant particles with long life on the brane, which indicates that these resonances might be regarded as a candidate for dark matter.
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