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.

*This project is supported by the Department of Energy under grant DE-FG02-99ER45761.

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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