Kosterlitz-Thouless Transition and Short Range Spatial Correlations in an Extended Hubbard Model

Preprint

13 June 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9606087

Abstract

We study the competition between intersite and local correlations in a spinless two-band extended Hubbard model by taking an alternative limit of infinite dimensions. We find that the intersite density fluctuations suppress the charge Kondo energy scale and lead to a Fermi liquid to non-Fermi liquid transition for repulsive on-site density-density interactions. In the absence of intersite interactions, this transition reduces to the known Kosterlitz-Thouless transition. We show that a new line of non-Fermi liquid fixed points replace those of the zero intersite interaction problem.

Keywords

KOSTERLITZ THOULESS TRANSITION
THOULESS TRANSITION
EXTENDED HUBBARD
HUBBARD MODEL
FERMI LIQUID
INTERSITE

All Related Versions

Version 1, 1996-06-13, ArXiv
Published version: Physical Review Letters, 77 (16), 3391.

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