Theory of single-particle properties of the Hubbard model

Preprint

3 February 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9502015

Abstract

It is shown that it is possible to quantitatively explain quantum Monte Carlo results for the Green's function of the two-dimensional Hubbard model in the weak to intermediate coupling regime. The analytic approach includes vertex corrections in a paramagnon-like self-energy. All parameters are determined self-consistently. This approach clearly shows that in two dimensions Fermi-liquid quasiparticles disappear in the paramagnetic state when the antiferromagnetic correlation length becomes larger than the electronic thermal de Broglie wavelength.

Keywords

QUANTITATIVELY EXPLAIN
LIQUID QUASIPARTICLES
PARTICLE PROPERTIES
BROGLIE WAVELENGTH
ANTIFERROMAGNETIC
SINGLE PARTICLE
EXPLAIN QUANTUM
HUBBARD MODEL
MONTE CARLO

All Related Versions

Version 1, 1995-02-03, ArXiv
Published version: Europhysics Letters, 33 (2), 159.

This publication has 0 references indexed in Scilit: