SU(2)-path integral investigation of Holstein dimer

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SU(2)-path integral investigation of Holstein dimer.pdf (145.1 KB)

Date

2000

Authors

Hakioğlu, A. T.
Ivanov, V. A.
Zhuravlev, M. Ye.

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Supervisor

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Source Title

Physica A : Statistical Mechanics and its Applications

Print ISSN

0378-4371

Electronic ISSN

1873-2119

Publisher

Elsevier Science Publishers B.V., Amsterdam, Netherlands

Volume

284

Issue

1-4

Pages

172 - 186

Language

English

Type

Article

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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 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 orbital energies are considered. The destruction of quasiclassical mean-field solution is discussed.

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Keywords

Electrodynamics , Electronic structure , Frequencies , Functions , Ground state , Phonons , Electron orbital energies , Holstein dimer , Mean field solution , Path integral , Quasiclassical mean field solution , Dimers

Citation

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http://hdl.handle.net/11693/25004

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http://dx.doi.org/10.1016/S0378-4371(00)00111-4

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Department of Physics