SU(2) coherent state path integral investigation of the Holstein dimer
Date
2000
Authors
Hakioğlu, A. T.
Ivanov, V. A.
Zhuravlev, M. Ye.
Editor(s)
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Acta Physica Polonica A
Print ISSN
0587-4246
Electronic ISSN
1898-794X
Publisher
Volume
97
Issue
5
Pages
927 - 930
Language
English
Type
Journal Title
Journal ISSN
Volume Title
Series
Abstract
The SU(2) coherent state path integral is used to investigate the partition function of the Holstein dimer. This approach naturally takes into account the dynamical symmetry of the model. The ground-state energy and the number of the phonons are calculated as functions of the parameters of the Hamiltonian. The renormalizations of the phonon frequency and electron hopping for bonding and antibonding states are considered. The destruction of quasiclassical mean field solution is discussed.