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	Topological order in Gutzwiller-projected wave functions for quantum antiferromagnetsk
	Li, Tao ; Yang, Hong-Yu
	2010-05-06 ; 2010-05-06
关键词	VALENCE-BOND STATE T-J MODEL SUPERCONDUCTIVITY EXCITATIONS Physics, Condensed Matter
中文摘要	We study the topological order in a resonating valence bond (RVB) state derived from the Gutzwiller projection of the BCS-like mean-field state. We propose the construction of the topological excitation on the projected RVB state through the Gutzwiller projection of the mean-field state with inserted Z(2) flux tube. We prove that all projected RVB states derived from bipartite effective theories, no matter what the gauge structure in the mean-field ansatz is, are positive definite in the sense of the Marshall sign rule, which provides a universal origin for the absence of topological order in such an RVB state.
语种	英语 ; 英语
出版者	AMERICAN PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/14638]
专题	清华大学
推荐引用方式 GB/T 7714	Li, Tao,Yang, Hong-Yu. Topological order in Gutzwiller-projected wave functions for quantum antiferromagnetsk[J],2010, 2010.
APA	Li, Tao,&Yang, Hong-Yu.(2010).Topological order in Gutzwiller-projected wave functions for quantum antiferromagnetsk..
MLA	Li, Tao,et al."Topological order in Gutzwiller-projected wave functions for quantum antiferromagnetsk".(2010).

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