The topological quantization and bifurcation of strings in early universe

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	The topological quantization and bifurcation of strings in early universe
	Duan, YS; Jiang, Y; Yang, GH; Duan, YS , Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China.
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2000
卷号	33 期号:1 页码:105-112
关键词	Cosmic Strings Model Spin
ISSN号	0253-6102
英文摘要	We present a new topological invariant to describe the spacetime defect in Riemann-Cartan manifold. By means of the phi-mapping theory and the rank-two topological tensor current (associated to the new topological invariant), we show that there must exist many string objects which naturally generated from the zero points of phi-mapping and is quantized in the topological level under the condition that the Jacobian J(phi/upsilon) not equal 0. When J(phi/upsilon) = 0, we find that there exists a crucial case of branch process. Based on the implicit function theorem and the Taylor expansion, the origin and bifurcation of the strings are detailed in the neighborhoods of the limit points and bifurcation points of phi-mapping, respectively.
学科主题	Physics
WOS记录号	WOS:000085038200019
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13025]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Duan, YS , Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Duan, YS,Jiang, Y,Yang, GH,et al. The topological quantization and bifurcation of strings in early universe[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2000,33(1):105-112.
APA	Duan, YS,Jiang, Y,Yang, GH,&Duan, YS , Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China..(2000).The topological quantization and bifurcation of strings in early universe.COMMUNICATIONS IN THEORETICAL PHYSICS,33(1),105-112.
MLA	Duan, YS,et al."The topological quantization and bifurcation of strings in early universe".COMMUNICATIONS IN THEORETICAL PHYSICS 33.1(2000):105-112.