QUANTAL ENTROPY, FLUCTUATIONS, AND THE DESCRIPTION OF MANY-BODY GROUND-STATES

被引：17

作者：

CANOSA, N ^{[1
]}

ROSSIGNOLI, R ^{[1
]}

PLASTINO, A ^{[1
]}

MILLER, HG ^{[1
]}

机构：

[1] UNIV PRETORIA, DEPT PHYS, PRETORIA 0002, SOUTH AFRICA

来源：

PHYSICAL REVIEW C | 1992年 / 45卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.45.1162

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We examine a variational approximation for the ground state of a quantum system, based on a specially defined quantal entropy, within the context of two different nuclear models dealing with pairing and monopole interactions. A substantial improvement over standard and projected Hartree-Fock and BCS descriptions is obtained, especially in transitional regions and in the description of fluctuations of relevant quantities. An analytic treatment is also developed for the thermodynamic limit.

引用

页码：1162 / 1170

页数：9

共 28 条

[1] VALIDITY OF MANY-BODY APPROXIMATION METHODS FOR A SOLVABLE MODEL .4. DEFORMED HARTREE-FOCK SOLUTION [J].

AGASSI, D ;

LIPKIN, HJ ;

MESHKOV, N .

NUCLEAR PHYSICS, 1966, 86 (02) :321-&

[2] CONNECTION BETWEEN MAXIMAL ENTROPY AND SCATTERING THEORETIC ANALYSES OF COLLISION PROCESSES [J].

ALHASSID, Y ;

LEVINE, RD .

PHYSICAL REVIEW A, 1978, 18 (01) :89-116

[3] COLLISION EXPERIMENTS WITH PARTIAL RESOLUTION OF FINAL-STATES - MAXIMUM ENTROPY PROCEDURE AND SURPRISAL ANALYSIS [J].

ALHASSID, Y ;

LEVINE, RD .

PHYSICAL REVIEW C, 1979, 20 (05) :1775-1788

[4]

[Anonymous], 1981, CATASTROPHE THEORY S

[5] TIME-DEPENDENT VARIATIONAL PRINCIPLE FOR THE EXPECTATION VALUE OF AN OBSERVABLE - MEAN-FIELD APPLICATIONS [J].

BALIAN, R ;

VENERONI, M .

ANNALS OF PHYSICS, 1985, 164 (02) :334-410

[6] DISSIPATION IN MANY-BODY SYSTEMS - GEOMETRIC APPROACH BASED ON INFORMATION-THEORY [J].

BALIAN, R ;

ALHASSID, Y ;

REINHARDT, H .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1986, 131 (1-2) :1-+

[7] INCOMPLETE DESCRIPTIONS, RELEVANT INFORMATION, AND ENTROPY PRODUCTION IN COLLISION PROCESSES [J].

BALIAN, R ;

VENERONI, M .

ANNALS OF PHYSICS, 1987, 174 (01) :229-244

[8] EQUIPROBABILITY, INFERENCE, AND ENTROPY IN QUANTUM-THEORY [J].

BALIAN, R ;

BALAZS, NL .

ANNALS OF PHYSICS, 1987, 179 (01) :97-144

[9] STATIC AND DYNAMIC VARIATIONAL-PRINCIPLES FOR EXPECTATION VALUES OF OBSERVABLES [J].

BALIAN, R ;

VENERONI, M .

ANNALS OF PHYSICS, 1988, 187 (01) :29-78

[10] ASYMPTOTIC DENSITY-MATRIX FOR MANY-BODY GROUND-STATES [J].

CANOSA, N ;

PLASTINO, A ;

ROSSIGNOLI, R .

NUCLEAR PHYSICS A, 1986, 453 (03) :417-428

← 1 2 3 →