Luttinger Liquid Instability in the One Dimensional t-J Model
Condensed Matter
2009-10-22 v1
Abstract
We study the t-J model in one dimension by numerically projecting the true ground state from a Luttinger liquid trial wave function. We find the model exhibits Luttinger liquid behavior for most of the phase diagram in which interaction strength and density are varied. However at small densities and high interaction strengths a new phase with a gap to spin excitations and enhanced superconducting correlations is found. We show this phase is a Luther-Emery liquid and study its correlation functions.
Keywords
Cite
@article{arxiv.cond-mat/9303002,
title = {Luttinger Liquid Instability in the One Dimensional t-J Model},
author = {C. Stephen Hellberg and E. J. Mele},
journal= {arXiv preprint arXiv:cond-mat/9303002},
year = {2009}
}
Comments
REVTEX, 11 pages. 4 Figures available on request from hellberg@mele.physics.upenn.edu