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EFFECTIVE MEAN-FIELD THEORY-BASED ON CUMULANT EXPANSION - A NEW APPROACH METHOD ORDER BY ORDER
AN, Y; SONG, YX; AN, Y , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
1995
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号24期号:2页码:233-238
摘要We propose in this paper an effective mean-field theory, which makes the calculation for any observable being performed in a general form of cumulant expansion. The effective mean-field equation with reasonable physical annotation, which is obtained from the lower bound extreme value condition of free energy, can be applied to general statistic mechanics and Lagrangian quantum theory. By applying it to lattices, our theory, for various models containing nonuniform system and nonequilibrium phenomenon, can give a realistic scheme to study the nonperturbative effect order by order. As a testing example to two-dimensional sing model, we obtain a result approaching the Onsager solution order by order.
部门归属SICHUAN UNIV,DEPT PHYS,CHENGDU 610064,PEOPLES R CHINA
关键词Lattice
学科领域Physics
收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11708
专题理论物理所SCI论文
通讯作者AN, Y , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
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AN, Y,SONG, YX,AN, Y , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.. EFFECTIVE MEAN-FIELD THEORY-BASED ON CUMULANT EXPANSION - A NEW APPROACH METHOD ORDER BY ORDER[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1995,24(2):233-238.
APA AN, Y,SONG, YX,&AN, Y , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1995).EFFECTIVE MEAN-FIELD THEORY-BASED ON CUMULANT EXPANSION - A NEW APPROACH METHOD ORDER BY ORDER.COMMUNICATIONS IN THEORETICAL PHYSICS,24(2),233-238.
MLA AN, Y,et al."EFFECTIVE MEAN-FIELD THEORY-BASED ON CUMULANT EXPANSION - A NEW APPROACH METHOD ORDER BY ORDER".COMMUNICATIONS IN THEORETICAL PHYSICS 24.2(1995):233-238.
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