Spectral Functions for the Holstein Model

Details Spectral Functions for the Holstein Model Spectral Functions for the Holstein Model

1996-10-31

arxiv.org/abs/cond-mat/9610219v2

Phys. Rev. B, 56 (1997) 13 634

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, Latex file, 1 postscript figure

Scientific paper

We perform an unitary transformation for the symmetric phonon mode of the
Holstein molecular crystal hamiltonian. We show how to compute the electronic
spectral functions by exact numerical diagonalisation of an effective
hamiltonian fully taking account of the symmetric phonon mode, usually
discarded.

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