Approximation for discrete Fourier transform and application in study of three-dimensional interacting electron gas

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	Approximation for discrete Fourier transform and application in study of three-dimensional interacting electron gas
	Yan, XZ
刊名	PHYSICAL REVIEW E
	2011
卷号	84 期号:1
关键词	2-DIMENSIONAL HUBBARD-MODEL D-P MODEL GROUND-STATE CONSERVING APPROXIMATION CORRELATION ENERGY HIGH DENSITY SUPERCONDUCTIVITY CRYSTALLIZATION SYSTEMS
ISSN号	1539-3755
通讯作者	Yan, XZ: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	The discrete Fourier transform is approximated by summing over part of the terms with corresponding weights. The approximation reduces significantly the requirement for computer memory storage and enhances the numerical computation efficiency with several orders without losing accuracy. As an example, we apply the algorithm to study the three-dimensional interacting electron gas under the renormalized-ring-diagram approximation where the Green's function needs to be self-consistently solved. We present the results for the chemical potential, compressibility, free energy, entropy, and specific heat of the system. The ground-state energy obtained by the present calculation is compared with the existing results of Monte Carlo simulation and random-phase approximation.
收录类别	SCI
资助信息	National Basic Research 973 Program of China [2011CB932700]; NSFC [10774171, 10834011]; Chinese Academy of Sciences
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/311004/33958]
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	Yan, XZ. Approximation for discrete Fourier transform and application in study of three-dimensional interacting electron gas[J]. PHYSICAL REVIEW E,2011,84(1).
APA	Yan, XZ.(2011).Approximation for discrete Fourier transform and application in study of three-dimensional interacting electron gas.PHYSICAL REVIEW E,84(1).
MLA	Yan, XZ."Approximation for discrete Fourier transform and application in study of three-dimensional interacting electron gas".PHYSICAL REVIEW E 84.1(2011).