• DOI:10.1088/1475-7516/2015/03/014
• Corpus ID: 9960929

Localization and mass spectra of various matter fields on scalar-tensor brane

@article{Xie2014LocalizationAM,
  title={Localization and mass spectra of various matter fields on scalar-tensor brane},
  author={Qun-Ying Xie and Zhen-hua Zhao and Yi-Ming Zhong and Jie Yang and Xiang-Nan Zhou},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2014},
  volume={2015},
  pages={014 - 014}
}

• Q. Xie, Zhen-hua Zhao, +2 authors Xiang-Nan Zhou
• Published 22 October 2014
• Physics
• Journal of Cosmology and Astroparticle Physics

Recently, a new scalar-tensor braneworld model was presented in [Phys. Rev. D 86 (2012) 127502]. It not only solves the gauge hierarchy problem but also reproduces a correct Friedmann-like equation on the brane. In this new model, there are two different brane solutions, for which the mass spectra of gravity on the brane are the same. In this paper, we investigate localization and mass spectra of various bulk matter fields (i.e., scalar, vector, Kalb-Ramond, and fermion fields) on the brane. It is shown that the zero modes of all the matter fields can be localized on the positive tension brane under some conditions, and the mass spectra of each kind of bulk matter field for the two brane solutions are different except for some special cases, which implies that the two brane solutions are not physically equivalent. When the coupling constants between the dilaton and bulk matter fields take special values, the mass spectra for both solutions are the same, and the scalar and vector zero modes are localized on the negative tension brane, while the KR zero mode is still localized on the positive tension brane.