Consequences of the local spin self-energy approximation on the heavy Fermion quantum phase transition
Strongly Correlated Electrons
2009-11-11 v2
Abstract
We show, using the periodic Anderson model, that the local spin self-energy approximation, as implemented in the extended dynamical mean field theory (EDMFT), results in a first order phase transition which persists to T=0. Around the transition, there is a finite coexistence region of the paramagnetic and antiferromagnetic (AFM) phases. The region is bounded by two critical transition lines which differ by an electron-hole bubble at the AFM ordering wave vector.
Keywords
Cite
@article{arxiv.cond-mat/0501175,
title = {Consequences of the local spin self-energy approximation on the heavy Fermion quantum phase transition},
author = {Ping Sun and Gabriel Kotliar},
journal= {arXiv preprint arXiv:cond-mat/0501175},
year = {2009}
}
Comments
16 pages, 1 figure