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Kang, Guang-Zhen; Zhang, De-Sheng; Du, Long3; Xu, Jun; Zong, Hong-Shi | |
Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model | |
Source Publication | CHINESE PHYSICS C |
Language | 英语 |
Keyword | QUANTUM-THEORY DIMENSIONS HIERARCHY |
Abstract | We investigate a 6D generalized Randall-Sundrum brane world scenario with a bulk cosmological constant. Each stress-energy tensor T-ab(i) on the brane is shown to be similar to a constant vacuum energy. This is consistent with the Randall-Sundrum model, in which each 3-brane Lagrangian yielded a constant vacuum energy. By adopting an anisotropic metric ansatz, we obtain the 5D Friedmann-Robertson-Walker field equations. In a slightly later period, the expansion of the universe is proportional to the square root of time, t(1/2), which is similar to the period of the radiation-dominated regime. Moreover, we investigate the case with two a(t) and two b(t). In a large range of t, we obtain the 3D effective cosmological constant Lambda(eff) = 2 Omega/3 > 0, which is independent of the integral constant. Here, the scale factor is an exponential expansion, which is consistent with our present observation of the universe. Our results demonstrate that it is possible to construct a model that solves the dark energy problem, while guaranteeing a positive brane tension. |
2019 | |
ISSN | 1674-1137 |
Volume | 43Issue:9Pages:95101 |
Cooperation Status | 国内 |
Subject Area | Physics |
MOST Discipline Catalogue | Physics, Nuclear ; Physics, Particles & Fields |
DOI | 10.1088/1674-1137/43/9/095101 |
Indexed By | SCIE |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itp.ac.cn/handle/311006/26939 |
Collection | SCI期刊论文 |
Affiliation | 1.Yangzhou Polytech Inst, Sch Sci, Yangzhou 225127, Jiangsu, Peoples R China 2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 3.Changzhou Inst Technol, Sch Sci, Changzhou 213032, Peoples R China 4.Guangxi Univ Sci & Technol, Sch Sci, Liuzhou 545006, Peoples R China 5.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 6.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China |
Recommended Citation GB/T 7714 | Kang, Guang-Zhen,Zhang, De-Sheng,Du, Long,et al. Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model[J]. CHINESE PHYSICS C,2019,43(9):95101. |
APA | Kang, Guang-Zhen,Zhang, De-Sheng,Du, Long,Xu, Jun,&Zong, Hong-Shi.(2019).Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model.CHINESE PHYSICS C,43(9),95101. |
MLA | Kang, Guang-Zhen,et al."Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model".CHINESE PHYSICS C 43.9(2019):95101. |
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Anisotropic evolutio（516KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text |
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