Dynamical Mean Field Theory, Density-Matrix Embedding Theory and Rotationally Invariant Slave Bosons: a Unified Perspective

ORAL

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.

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Presenters

  • Tsung-Han Lee

    Physics and Astronomy Department, Rutgers University

Authors

  • Tsung-Han Lee

    Physics and Astronomy Department, Rutgers University

  • Thomas Ayral

    Physics and Astronomy Department, Rutgers University

  • Gabriel Kotliar

    CMPMS, Brookhaven national lab, Department of Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08856, USA, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Rutgers University, Condensed Matter Physics and Materials Science Department, Brookhaven National Lab, Physics and Astronomy Department, Rutgers University, Physics and Astronomy, rutgers university