A NEW CONSTRUCTION OF THERMODYNAMIC MEAN-FIELD THEORIES OF ITINERANT FERMIONS - APPLICATION TO THE FALICOV-KIMBALL MODEL

被引：134
作者：
JANIS, V
机构：
[1] CZECHOSLOVAK ACAD SCI, INST PHYS, CS-18040 PRAGUE, CZECHOSLOVAKIA
[2] UNIV DORTMUND, INST PHYS, W-4600 DORTMUND 50, GERMANY
来源：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1991年 / 83卷 / 02期
关键词：
D O I：
10.1007/BF01309423
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We present a general scheme for a construction of meanfield-like theories of itinerant lattice fermions based on solutions to the exact d = infinity grand canonical potential. The general construction is explicitly demonstrated on the exactly solvable d = infinity Falicov-Kimball model. A mean-field zero-temperature behaviour of this sample model is studied quantitatively.
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收藏
页码：227 / 235
页数：9
相关论文
共 23 条
[1]   SELF-CONSISTENT APPROXIMATIONS IN MANY-BODY SYSTEMS [J].
BAYM, G .
PHYSICAL REVIEW, 1962, 127 (04) :1391-&
[2]   REVIEW OF TECHNIQUES IN THE LARGE-N EXPANSION FOR DILUTE MAGNETIC-ALLOYS [J].
BICKERS, NE .
REVIEWS OF MODERN PHYSICS, 1987, 59 (04) :845-939
[3]   GROUND-STATE PROPERTIES OF A SPINLESS FALICOV-KIMBALL MODEL - ADDITIONAL FEATURES [J].
BRANDT, U ;
SCHMIDT, R .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 67 (01) :43-51
[4]   THERMODYNAMICS AND CORRELATION-FUNCTIONS OF THE FALICOV-KIMBALL MODEL IN LARGE DIMENSIONS [J].
BRANDT, U ;
MIELSCH, C .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1989, 75 (03) :365-370
[5]   THERMODYNAMICS OF THE FALICOV-KIMBALL MODEL IN LARGE DIMENSIONS .2. CRITICAL-TEMPERATURE AND ORDER PARAMETER [J].
BRANDT, U ;
MIELSCH, C .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1990, 79 (02) :295-299
[6]   FREE-ENERGY OF THE FALICOV-KIMBALL MODEL IN LARGE DIMENSIONS [J].
BRANDT, U ;
MIELSCH, C .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 82 (01) :37-41
[7]   EXACT RESULTS FOR THE DISTRIBUTION OF THE F-LEVEL GROUND-STATE OCCUPATION IN THE SPINLESS FALICOV-KIMBALL MODEL [J].
BRANDT, U ;
SCHMIDT, R .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 63 (01) :45-53
[8]   SIMPLE MODEL FOR SEMICONDUCTOR-METAL TRANSITIONS - SMB6 AND TRANSITION-METAL OXIDES [J].
FALICOV, LM ;
KIMBALL, JC .
PHYSICAL REVIEW LETTERS, 1969, 22 (19) :997-&
[9]   FEYNMAN QUANTIZATION - AN OPERATOR APPROACH TO PATH INTEGRATION OVER COMMUTING AND ANTICOMMUTING VARIABLES [J].
JANIS, V .
CZECHOSLOVAK JOURNAL OF PHYSICS, 1990, 40 (08) :836-856
[10]   FREE-ENERGY FUNCTIONAL IN THE GENERALIZED COHERENT-POTENTIAL APPROXIMATION [J].
JANIS, V .
PHYSICAL REVIEW B, 1989, 40 (16) :11331-11334
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