Violation of Luttinger's Theorem in the Two-Dimensional t-J Model

Preprint

11 March 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9803140

Abstract

We have calculated the high temperature series for the momentum distribution function n_k of the 2D t-J model to 12th order in inverse temperature. By extrapolating the series to T=0.2J we searched for a Fermi surface of the 2D t-J model. We find that three criteria used for estimating the location of a Fermi surface violate Luttinger's Theorem, implying the 2D t-J model does not have an adiabatic connection to a non-interacting model.

Keywords

VIOLATE LUTTINGER'S THEOREM
MOMENTUM DISTRIBUTION
ADIABATIC CONNECTION
FERMI SURFACE
TEMPERATURE

All Related Versions

Version 1, 1998-03-11, ArXiv
Published version: Physical Review Letters, 81 (14), 2966.

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