Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory

Zheng, Bo-Xiao and Chan, Garnet Kin-Lic (2016) Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory. Physical Review B, 93 (3). Art. No. 035126. ISSN 2469-9950. doi:10.1103/PhysRevB.93.035126. https://resolver.caltech.edu/CaltechAUTHORS:20161221-123850324

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Abstract

We compute the ground-state phase diagram of the Hubbard and frustrated Hubbard models on the square lattice with density matrix embedding theory using clusters of up to 16 sites. We provide an error model to estimate the reliability of the computations and complexity of the physics at different points in the diagram. We find superconductivity in the ground state as well as competition between inhomogeneous charge, spin, and pairing states at low doping. The estimated errors in the study are below T_c in the cuprates and on the scale of contributions in real materials that are neglected in the Hubbard model.

Item Type:

Article

Related URLs:

URL	URL Type	Description
https://doi.org/10.1103/PhysRevB.93.035126	DOI	Article
https://journals.aps.org/prb/supplemental/10.1103/PhysRevB.93.035126	Publisher	Supplemental Material
https://arxiv.org/abs/1504.01784	arXiv	Discussion Paper

ORCID:

Author	ORCID
Zheng, Bo-Xiao	0000-0003-3983-8006
Chan, Garnet Kin-Lic	0000-0001-8009-6038

Additional Information:

© 2016 American Physical Society. Received 8 April 2015. Revised 22 December 2015. We acknowledge funding from the US Department of Energy, Office of Science, through Grants No. DE-SC0008624 and No. DE-SC0010530. This work was also performed as part of the Simons Collaboration on the Many Electron Problem, sponsored by the Simons Foundation. We thank Steven White and Shiwei Zhang for providing unpublished data and Emanuel Gull for helpful comments. We also thank Sandeep Sharma for discussion on implementing DMRG with broken particle number symmetry. Further discussion of the methodology and results can be found in Appendices.

Funders:

Funding Agency	Grant Number
Department of Energy (DOE)	DE-SC0008624
Department of Energy (DOE)	DE-SC0010530
Simons Foundation	UNSPECIFIED

Issue or Number:

DOI:

10.1103/PhysRevB.93.035126

Record Number:

CaltechAUTHORS:20161221-123850324

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20161221-123850324

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No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

73089

Collection:

CaltechAUTHORS

Deposited By:

Donna Wrublewski

Deposited On:

21 Dec 2016 21:45

Last Modified:

11 Nov 2021 05:11

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