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Rotationally invariant slave-boson and density matrix embedding theory: A unified framework and a comparative study on the 1D and 2D Hubbard Model

Authors :
Lee, Tsung-Han
Ayral, Thomas
Yao, Yong-Xin
Lanata, Nicola
Kotliar, Gabriel
Source :
Phys. Rev. B 99, 115129 (2019)
Publication Year :
2018

Abstract

We present detailed benchmark ground-state calculations of the one- and two-dimensional Hubbard model utilizing the cluster extensions of the rotationally invariant slave-boson (RISB) mean-field theory and the density matrix embedding theory (DMET). Our analysis shows that the overall accuracy and the performance of these two methods are very similar. Furthermore, we propose a unified computational framework that allows us to implement both of these techniques on the same footing. This provides us with a new line of interpretation and paves the ways for developing systematically new generalizations of these complementary approaches.

Details

Database :
arXiv
Journal :
Phys. Rev. B 99, 115129 (2019)
Publication Type :
Report
Accession number :
edsarx.1812.09820
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.99.115129