Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm

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	Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm
	Sun, LQ; Zhang, J; Qin, SJ; Lei, Y; Sun, LQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
刊名	PHYSICAL REVIEW B
	2002
卷号	65 期号:13 页码:-
关键词	Systems
ISSN号	1098-0121
英文摘要	An improved trial-wave-function initialization approach is suggested in an infinite-chain density-matrix renormalization-group (DMRG) method. When we remove the sign freedom of the retained basis in a DMRG algorithm, an optimal trial wave function for a chain can be obtained from previous wave functions for chains with shorter lengths in DMRG. Such an optimal trial wave function will reduce the iteration number of Lanczos-style approaches in calculating the eigen-wave-functions. The possibilities of converging to other eigenenergy levels are also eliminated. A one-dimensional Heisenberg chain is used in this paper to illustrate our practice.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000174903900020
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13555]
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	Sun, LQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Sun, LQ,Zhang, J,Qin, SJ,et al. Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm[J]. PHYSICAL REVIEW B,2002,65(13):-.
APA	Sun, LQ,Zhang, J,Qin, SJ,Lei, Y,&Sun, LQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm.PHYSICAL REVIEW B,65(13),-.
MLA	Sun, LQ,et al."Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm".PHYSICAL REVIEW B 65.13(2002):-.