Fast impurity solver based on Gutzwiller variational approach

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	Fast impurity solver based on Gutzwiller variational approach
	Zhuang, JN ; Wang, L ; Fang, Z ; Dai, X
刊名	PHYSICAL REVIEW B
	2009
卷号	79 期号:16
关键词	MEAN-FIELD THEORY ELECTRONIC-STRUCTURE CALCULATIONS FIRST-PRINCIPLES CALCULATIONS STRONGLY CORRELATED SYSTEMS INFINITE DIMENSIONS MOTT TRANSITION HUBBARD-MODEL SPECTRA METALS
ISSN号	1098-0121
通讯作者	Zhuang, JN: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	A fast impurity solver for the dynamical mean-field theory (DMFT) named two-mode approximation is proposed based on the Gutzwiller variational approach, which captures the main features of both the coherent and incoherent motion of the electrons. The solver works with real frequency at zero temperature and it provides directly the spectral function of the electrons. It can be easily generalized to multiorbital impurity problems with general on-site interactions, which makes it very useful in local-density approximation plus DMFT. Benchmarks on one- and two-band Hubbard models are presented, and the results agree well with those of exact diagonalization. Lastly a few cartoonlike five-band results are presented, showing that the present solver is really capable of dealing with multiband systems.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/38010]
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	Zhuang, JN,Wang, L,Fang, Z,et al. Fast impurity solver based on Gutzwiller variational approach[J]. PHYSICAL REVIEW B,2009,79(16).
APA	Zhuang, JN,Wang, L,Fang, Z,&Dai, X.(2009).Fast impurity solver based on Gutzwiller variational approach.PHYSICAL REVIEW B,79(16).
MLA	Zhuang, JN,et al."Fast impurity solver based on Gutzwiller variational approach".PHYSICAL REVIEW B 79.16(2009).