Published July 1991
| Version v1
Journal article
Approximate ground state of the Lipkin model Hamiltonian in density-matrix formalism
Creators
- 1. Institute of Physical and Chemical Research, Wako, Saitama (Japan)
- 2. Kyorin Univ., Mitaka, Tokyo (Japan). School of Medicine
- 3. Grenoble-1 Univ., 38 (France). Inst. des Sciences Nucleaires
- 4. Lanzhou Univ., Gansu (China). Dept. of Modern Physics
- 5. CCAST World Lab., Beijing, BJ (China). Center for Theoretical Physics
Description
A method for finding the ground state of many-body system, which is consistent with the truncation scheme used in the time-dependent density-matrix formalism of Wang and Cassing, is presented and applied to the Lipkin model. It is found that the method gives better ground states than the Hartree-Fock approximation. However, they significantly differ from the exact ground states. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik. A, Hadrons and Nuclei
- Journal Volume
- 339
- Journal Issue
- 3
- Series
- Z. Phys., A Hadrons Nuclei.
- Journal Page Range
- 341-348
- CODEN
- ZPAHE
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 22056803
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ANALYTICAL SOLUTION; CORRELATIONS; DENSITY MATRIX; EIGENSTATES; EIGENVALUES; FERMIONS; FIELD EQUATIONS; GROUND STATES; HAMILTONIANS; HARTREE-FOCK METHOD; MANY-BODY PROBLEM; MEAN-FIELD THEORY; OCCUPATION NUMBER; QUANTUM MECHANICS; TIME DEPENDENCE
- Descriptors DEC
- ENERGY LEVELS; EQUATIONS; MATHEMATICAL OPERATORS; MATRICES; MECHANICS; QUANTUM OPERATORS