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题名: Wave-function initialization in an infinite-chain density-matrix renormalization-group algorithm
作者: Sun, LQ ;  Zhang, J ;  Qin, SJ ;  Lei, Y
刊名: PHYSICAL REVIEW B
出版日期: 2002
卷号: 65, 期号:13, 页码:-
关键词: SYSTEMS
学科分类: Physics
通讯作者: Sun, LQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Xinjiang Univ, Dept Phys, Urumqi 830046, Peoples R China; Kyushu Univ, Dept Phys, Higashi Ku, Fukuoka 8128581, Japan; Beijing Univ, Dept Phys, Beijing 100871, Peoples R China
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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000174903900020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13555
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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):-.
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