Self-Consistent Approach for Mapping Interacting Systems in Continuous Space to Lattice Models

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	Self-Consistent Approach for Mapping Interacting Systems in Continuous Space to Lattice Models
	Wu, BA ; Xu, Y ; Dong, L ; Shi, JR
刊名	CHINESE PHYSICS LETTERS
	2012
卷号	29 期号:8
关键词	WANNIER FUNCTIONS OPTICAL LATTICES ENERGY-BANDS BOSONS ATOMS
ISSN号	0256-307X
通讯作者	Wu, BA (reprint author), Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China.
中文摘要	We propose a general variational principle for mapping the interacting systems in continuous space to lattice models. Based on the principle, we derive a set of self-consistent nonlinear equations for the Wannier functions (or, equivalently for the Bloch functions). These equations show that the Wannier functions can be strongly influenced by the interaction and be significantly different from their non-interacting counterparts. The approach is demonstrated with interacting bosons in an optical lattice, and illustrated quantitatively by a simple model of interacting bosons in a double well potential. It is shown that the so-determined lattice model parameters can be significantly different from their non-interacting values.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10825417]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52429]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wu, BA,Xu, Y,Dong, L,et al. Self-Consistent Approach for Mapping Interacting Systems in Continuous Space to Lattice Models[J]. CHINESE PHYSICS LETTERS,2012,29(8).
APA	Wu, BA,Xu, Y,Dong, L,&Shi, JR.(2012).Self-Consistent Approach for Mapping Interacting Systems in Continuous Space to Lattice Models.CHINESE PHYSICS LETTERS,29(8).
MLA	Wu, BA,et al."Self-Consistent Approach for Mapping Interacting Systems in Continuous Space to Lattice Models".CHINESE PHYSICS LETTERS 29.8(2012).