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      SU(2)-path integral investigation of Holstein dimer

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      Author
      Hakioğlu, A. T.
      Ivanov, V. A.
      Zhuravlev, M. Ye.
      Date
      2000
      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
      Item Usage Stats
      137
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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.
      Keywords
      Electrodynamics
      Electronic structure
      Frequencies
      Functions
      Ground state
      Phonons
      Electron orbital energies
      Holstein dimer
      Mean field solution
      Path integral
      Quasiclassical mean field solution
      Dimers
      Permalink
      http://hdl.handle.net/11693/25004
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/S0378-4371(00)00111-4
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      • Department of Physics 2339
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