Dynamical Mean Field Theory, Density-Matrix Embedding Theory and Rotationally Invariant Slave Bosons: a Unified Perspective
Strongly Correlated Electrons
2018-01-03 v2
Abstract
We present a unified perspective on Dynamical Mean Field Theory (DMFT), Density-Matrix Embedding Theory (DMET) and Rotationally Invariant Slave Bosons (RISB). We show that DMET can be regarded as a simplification of the RISB method where the quasiparticle weight is set to unity. This relation allows to easily transpose extensions of a given method to another: for instance, a temperature-dependent version of RISB can be used to derive a temperature-dependent free-energy formula for DMET.
Keywords
Cite
@article{arxiv.1710.07773,
title = {Dynamical Mean Field Theory, Density-Matrix Embedding Theory and Rotationally Invariant Slave Bosons: a Unified Perspective},
author = {Thomas Ayral and Tsung-Han Lee and Gabriel Kotliar},
journal= {arXiv preprint arXiv:1710.07773},
year = {2018}
}
Comments
14 pages, 2 figures