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@ARTICLE{deFilippis:57567,
      author       = {de Filippis, G. and Cataudella, V. and Mishchenko, A. S.
                      and Perroni, C. A. and Devreese, J. T.},
      title        = {{V}alidity of the {F}ranck-{C}ondon principle in the
                      optical spectroscopy: optical conductivity of the
                      {F}röhlich polaron},
      journal      = {Physical review letters},
      volume       = {96},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-57567},
      pages        = {136405},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The optical absorption of the Frohlich polaron model is
                      obtained by an approximation-free diagrammatic Monte Carlo
                      method and compared with two new approximate approaches that
                      treat lattice relaxation effects in different ways. We show
                      that: (i) a strong coupling expansion, based on the
                      Franck-Condon principle, well describes the optical
                      conductivity for large coupling strengths (alpha > 10); (ii)
                      a memory function formalism with phonon broadened levels
                      reproduces the optical response for weak coupling strengths
                      (alpha < 6) taking the dynamic lattice relaxation into
                      account. In the coupling regime 6 <alpha < 10, the optical
                      conductivity is a rapidly changing superposition of both
                      Franck-Condon and dynamic contributions.},
      keywords     = {J (WoSType)},
      cin          = {IFF-TH-I},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB30},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000236612400045},
      pubmed       = {pmid:16712012},
      doi          = {10.1103/PhysRevLett.96.136405},
      url          = {https://juser.fz-juelich.de/record/57567},
}