One-dimensional strongly interacting Luttinger liquid of lattice spinless 
fermions

Karnaukhov, I. N.; Ovchinnikov, A. A.

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One-dimensional strongly interacting Luttinger liquid of lattice spinless fermions

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Karnaukhov, I. N.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Ovchinnikov, A. A.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Karnaukhov, I. N., & Ovchinnikov, A. A. (2002). One-dimensional strongly interacting Luttinger liquid of lattice spinless fermions. Europhysics Letters, 57(4), 540-545. Retrieved from http://www.edpsciences.org/articles/epl/abs/2002/04/6930/6930.html.

Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-3824-6

Abstract

We consider the spinless fermion model with hard-core repulsive potential between particles extended on a few lattice sites delta. The Luttinger-liquid behavior is studied for different values of a hard-core radius. We derive a critical exponent Theta of the one-particle correlation function [c(i)(dagger)c(j)] for an arbitrary electron density and coupling constant. Our results show that at high density the behavior of fermions can be described as a strongly interacting Luttinger liquid with Phi > 1. As a result, the residual Fermi surface disappears.