Bulk matters on symmetric and asymmetric de Sitter thick branes
文献类型：期刊论文
| 作者 | Liu, Yu-Xiao1; Zhao, Zhen-Hua1,2; Wei, Shao-Wen1; Duan, Yi-Shi1 |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2009-02-01 |
| 页码 | 27 |
| 关键词 | extra dimensions Cosmic strings domain walls monopoles |
| ISSN号 | 1475-7516 |
| DOI | 10.1088/1475-7516/2009/02/003 |
| 英文摘要 | An asymmetric thick domain wall solution with de Sitter (dS) expansion in five dimensions can be constructed from a symmetric one by using a same scalar (kink) with different potentials. In this paper, by presenting the mass-independent potentials of Kaluza-Klein (KK) modes in the corresponding Schrodinger equations, we investigate the localization and mass spectra of various bulk matter fields on the symmetric and asymmetric dS thick branes. For spin 0 scalars and spin 1 vectors, the potentials of KK modes in the corresponding Schrodinger equations are the modified Poschl-Teller potentials, and there exist a mass gap and a series of continuous spectrum. It is shown that the spectrum of scalar KK modes on the symmetric dS brane contains only one bound mode (the massless mode). However, for the asymmetric dS brane with a large asymmetric factor, there are two bound scalar KK modes: a zero mode and a massive mode. For spin 1 vectors, the spectra of KK modes on both dS branes consist of a bound massless mode and a set of continuous ones, i.e., the asymmetric factor does not change the number of the bound vector KK modes. For spin 1/2 fermions, two types of kink-fermion couplings are investigated in detail. For the usual Yukawa coupling eta(Psi) over bar phi Psi, there exists no mass gap but a continuous gapless spectrum of KK states. For the scalar-fermion coupling eta(Psi) over bar sin(phi/phi(0)) cos(-delta)(phi/phi(0))Psi with a positive coupling constant eta, there exist some discrete bound KK modes and a series of continuous ones. The total number of bound states increases with the coupling constant eta. For the case of the symmetric dS brane and positive eta, there are N-L(N-L >= 1) left chiral fermion bound states (including zero mode and massive KK modes) and N-L - 1 right chiral fermion bound states (including only massive KK modes). For the asymmetric dS brane scenario, the asymmetric factor a reduces the number of the bound fermion KK modes. For large enough a, there would not be any right chiral fermion bound mode, but at least one left chiral fermion zero mode. |
| WOS关键词 | FERMIONIC ZERO MODES ; COSMOLOGICAL CONSTANT PROBLEM ; STRING-LIKE DEFECT ; DOMAIN-WALLS ; EXTRA DIMENSION ; GRAVITY ; LOCALIZATION ; WORLDS ; SPACETIMES ; MILLIMETER |
| 资助项目 | National Natural Science Foundation of China[10705013] ; Doctor Education Fund of Educational Department of China[20070730055] ; Fundamental Research Fund for Physics and Mathematics of Lanzhou University[Lzu07002] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000263824100003 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China ; Doctor Education Fund of Educational Department of China ; Fundamental Research Fund for Physics and Mathematics of Lanzhou University |
| 源URL | [http://119.78.100.186/handle/113462/30552]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Liu, Yu-Xiao |
| 作者单位 | 1.Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yu-Xiao,Zhao, Zhen-Hua,Wei, Shao-Wen,et al. Bulk matters on symmetric and asymmetric de Sitter thick branes[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2009:27. |
| APA | Liu, Yu-Xiao,Zhao, Zhen-Hua,Wei, Shao-Wen,&Duan, Yi-Shi.(2009).Bulk matters on symmetric and asymmetric de Sitter thick branes.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,27. |
| MLA | Liu, Yu-Xiao,et al."Bulk matters on symmetric and asymmetric de Sitter thick branes".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2009):27. |
入库方式： OAI收割
来源：近代物理研究所
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