Edge states in open antiferromagnetic quantum spin chains

	Edge states in open antiferromagnetic quantum spin chains
	Ng, TK; Qin, SJ; Su, ZB
	1996
会议日期	DEC 02-05, 1995
会议地点	SEOUL, SOUTH KOREA
关键词	BOND GROUND-STATES RENORMALIZATION-GROUPS DYNAMICS
卷号	29
页码	S102-S106
英文摘要	The structure of edge (end) states in general open antiferromagnetic quantum spin chains is discussed in this paper within the frameworks of Non-linear-sigma-model (NL sigma M) for open antiferromagnetic quantum spin chains. We argue that edge states with fractionalized quantum number S-edge exist in all spin chains with S greater than or equal to 1, with S-edge=S/2 for integer spin chains, and S-edge=(S-1/2)/2 for half-integer spinchains. Numerical results of density-matrix renormalization group computation for open spin chains with S=1/2, 1, 3/2, 2 are presented which verify our edge-state picture.
会议录	JOURNAL OF THE KOREAN PHYSICAL SOCIETY
会议录出版者	KOREAN PHYSICAL SOC
会议录出版地	SEOUL
语种	英语
ISSN号	0374-4884
WOS研究方向	Physics
内容类型	会议论文
源URL	[http://ir.itp.ac.cn/handle/311006/23798]
专题	SCI会议论文
作者单位	INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Ng, TK,Qin, SJ,Su, ZB. Edge states in open antiferromagnetic quantum spin chains[C]. 见:. SEOUL, SOUTH KOREA. DEC 02-05, 1995.