Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory
By B. Zheng, Garnet Kin-Lic Chan. 2015
140 citations recorded by the source corpus.
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.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/ebc5124750f9bbea5ad0b31b9169f9659d60ffe3
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Quantum algorithms to simulate many-body physics of correlated fermions. (2017, methodology): “Significant numerical progress has been made in the identification of the unconventional Mott-insulator transition and a superconducting phase with a d-wave order parameter [16, 17].”
- Stripe order in the underdoped region of the two-dimensional Hubbard model (2016, background): “(19, 67) but compare the energies of different clusters directly.”
- Absence of Superconductivity in the Pure Two-Dimensional Hubbard Model (2019, background): “Both positive and negative results have been found for d-wave pairing order, reflecting the extreme sensitivity of the ground state and low-lying excitations in the model, and the competition between d-wave and other states [33, 39–54].”