Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model

doi:10.1088/1674-1137/43/9/095101

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	Anisotropic evolution of 4-brane in a 6D generalized Randall-Sundrum model
	Kang, Guang-Zhen ; Zhang, De-Sheng ; Du, Long 5; Xu, Jun ; Zong, Hong-Shi
刊名	CHINESE PHYSICS C
	2019
卷号	43 期号:9 页码:95101
关键词	QUANTUM-THEORY DIMENSIONS HIERARCHY
ISSN号	1674-1137
DOI	10.1088/1674-1137/43/9/095101
英文摘要	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.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/26939]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Yangzhou Polytech Inst, Sch Sci, Yangzhou 225127, Jiangsu, Peoples R China 2.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China 3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 4.Guangxi Univ Sci & Technol, Sch Sci, Liuzhou 545006, Peoples R China 5.Changzhou Inst Technol, Sch Sci, Changzhou 213032, Peoples R China 6.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 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.