Published August 1, 1993
| Version v1
Journal article
Strong-coupling expansions for the attractive Holstein and Hubbard models
Creators
- 1. Institute for Theoretical Physics and Department of Physics, University of California, Santa Barbara, California 93106-4030 (United States)
Description
A strong-coupling expansion for the Holstein (electron-phonon) model is carried out through fourth order. In the large-frequency limit the expansion agrees with known results for the attractive Hubbard model. Mean-field theory is employed to determine transition temperatures of the effective (pseudospin) Hamiltonian and the results are compared with recent Monte Carlo simulations of these models in infinite dimensions
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 48
- Journal Issue
- 6
- Journal Page Range
- p. 3881-3891.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24071261
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ELECTRON CORRELATION; ELECTRON-PHONON COUPLING; HUBBARD MODEL; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE
- Descriptors DEC
- CORRELATIONS; COUPLING; CRYSTAL MODELS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; MATHEMATICAL MODELS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES