Work

Non-Fermi Liquid Behaviour in the Three Dimensional Hubbard Model

Year: 2020

Type: preprint

Abstract: We present a numerical study on non-Fermi liquid behaviour of a three dimensional system. The Hubbard model in a cubic lattice is simulated by the dynamical cluster approximation, in particular the quasi-particle weight is calculated at finite dopings for a range of temperatures. Near the putative quantum critical point, we find evidence of a separatrix at a finite doping which separates the Fermi liquid from non-Fermi liquid as the doping increases. Our results suggest that a marginal Fermi liquid and possibly a quantum critical point should exist in the three dimensions interacting Fermi system.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2008.12324

Authors: Kellar, Samuel, Tam, Ka-Ming

Institution: Louisiana State University

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, Office of Science

Awards: G121915436, G1645119126, G2411683797, Simulations of Competing Phases and Quantum Criticality in Strongly Correlated Materials, G2988778103, G3945850812, G8269158468, G8906985441

OpenAlex ID: W3082950823

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