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Title: Dynamical mean-field theory, density-matrix embedding theory, and rotationally invariant slave bosons: A unified perspective

In this paper, 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. Finally, this relation makes it easy to 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.
Authors:
 [1] ;  [1] ;  [2]
  1. Rutgers Univ., Piscataway, NJ (United States). Physics and Astronomy Dept.
  2. Rutgers Univ., Piscataway, NJ (United States). Physics and Astronomy Dept.; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
Publication Date:
Report Number(s):
BNL-203221-2018-JAAM
Journal ID: ISSN 2469-9950; TRN: US1802033
Grant/Contract Number:
SC0012704; FG02-99ER45761
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 23; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1425076
Alternate Identifier(s):
OSTI ID: 1414852

Ayral, Thomas, Lee, Tsung-Han, and Kotliar, Gabriel. Dynamical mean-field theory, density-matrix embedding theory, and rotationally invariant slave bosons: A unified perspective. United States: N. p., Web. doi:10.1103/PhysRevB.96.235139.
Ayral, Thomas, Lee, Tsung-Han, & Kotliar, Gabriel. Dynamical mean-field theory, density-matrix embedding theory, and rotationally invariant slave bosons: A unified perspective. United States. doi:10.1103/PhysRevB.96.235139.
Ayral, Thomas, Lee, Tsung-Han, and Kotliar, Gabriel. 2017. "Dynamical mean-field theory, density-matrix embedding theory, and rotationally invariant slave bosons: A unified perspective". United States. doi:10.1103/PhysRevB.96.235139. https://www.osti.gov/servlets/purl/1425076.
@article{osti_1425076,
title = {Dynamical mean-field theory, density-matrix embedding theory, and rotationally invariant slave bosons: A unified perspective},
author = {Ayral, Thomas and Lee, Tsung-Han and Kotliar, Gabriel},
abstractNote = {In this paper, 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. Finally, this relation makes it easy to 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.},
doi = {10.1103/PhysRevB.96.235139},
journal = {Physical Review B},
number = 23,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}