Disorder in the 1D spinless Holstein model

Details Disorder in the 1D spinless Holstein model Disorder in the 1D spinless Holstein model

1995-05-16

arxiv.org/abs/chao-dyn/9505010v1

Helvetica Physica Acta, 68, 312--327, 1995

Nonlinear Sciences

Chaotic Dynamics

13 pages, Plain TeX, 1 figure automatically produced in postscript

Scientific paper

We investigate a spinless fermion system on a one dimensional lattice interacting locally with the optical modes of a quantized phonon field: the Holstein model. The system is shown to have a disordered ground state, for small enough coupling, at any density. This is in contrast to the non quantized phonon case, the static Holstein model, which at half filling has an ordered ground state for all couplings.

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