VARIATIONAL PATH-INTEGRAL THEORY OF QUANTUM CRYSTALS

被引：17

作者：

LIU, S ^{[1
]}

HORTON, GK ^{[1
]}

COWLEY, ER ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,CAMDEN COLL ARTS & SCI,DEPT PHYS,CAMDEN,NJ 08102

来源：

PHYSICS LETTERS A | 1991年 / 152卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0375-9601(91)90632-I

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a theory of the thermodynamics of solids which, for the first time, successfully accounts quantitatively for the entire temperature range without perturbation expansion. Quantum effects are absorbed into an effective potential using a variational path-integral method. This potential is used in a classical Monte Carlo calculation.

引用

页码：79 / 82

页数：4

共 20 条

[1] Born M., 1956, DYNAMICAL THEORY CRY
[2] SOME MONTE-CARLO CALCULATIONS FOR THE LENNARD-JONES SOLID
COWLEY, ER
[J]. PHYSICAL REVIEW B, 1983, 28 (06): : 3160 - 3163
[3] CELL-CLUSTER AND SELF-CONSISTENT CALCULATIONS FOR A MODEL SODIUM-CHLORIDE CRYSTAL
COWLEY, ER
GROSS, J
GONG, ZX
HORTON, GK
[J]. PHYSICAL REVIEW B, 1990, 42 (05): : 3135 - 3141
[4] THERMODYNAMIC PROPERTIES OF A QUANTUM CHAIN WITH NEAREST-NEIGHBOR ANHARMONIC INTERACTIONS
CUCCOLI, A
TOGNETTI, V
VAIA, R
[J]. PHYSICAL REVIEW B, 1990, 41 (13): : 9588 - 9591
[5] Feynman R., 1965, QUANTUM MECH PATH IN
[6] FEYNMAN RP, 1986, PHYS REV A, V24, P1080
[7] QUANTUM CORRECTIONS TO THE THERMODYNAMICS OF NONLINEAR-SYSTEMS
GIACHETTI, R
TOGNETTI, V
[J]. PHYSICAL REVIEW B, 1986, 33 (11): : 7647 - 7658
[8] VARIATIONAL APPROACH TO QUANTUM STATISTICAL-MECHANICS OF NONLINEAR-SYSTEMS WITH APPLICATION TO SINE-GORDON CHAINS
GIACHETTI, R
TOGNETTI, V
[J]. PHYSICAL REVIEW LETTERS, 1985, 55 (09) : 912 - 915
[9] AN IMPROVED SELF-CONSISTENT PHONON APPROXIMATION
GOLDMAN, VV
HORTON, GK
KLEIN, ML
[J]. PHYSICAL REVIEW LETTERS, 1968, 21 (22) : 1527 - &
[10] Horton G., 1976, RARE GAS SOLIDS, V1

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