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The Antiferromagnetic Character of the Quantum Phase Transition in the Hubbard Model on the Honeycomb Lattice

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arxiv 2105.06936 v2 pith:R4KIGFK5 submitted 2021-05-14 cond-mat.str-el hep-lat

classification cond-mat.str-elhep-lat
keywords hubbardmodelanalysiscarlocriticalhexagonallatticemonte
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abstract

We provide a unified, comprehensive treatment of all operators that contribute to the anti-ferromagnetic, ferromagnetic, and charge-density-wave structure factors and order parameters of the hexagonal Hubbard Model. We use the Hybrid Monte Carlo algorithm to perform a systematic, carefully controlled analysis in the temporal Trotter error and of the thermodynamic limit. We expect our findings to improve the consistency of Monte Carlo determinations of critical exponents. We perform a data collapse analysis and determine the critical exponent $\beta=0.898(37)$ for the semimetal-Mott insulator transition in the hexagonal Hubbard Model. Our methods are applicable to a wide range of lattice theories of strongly correlated electrons.

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Cited by 1 Pith paper

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  1. The odd-parity altermagnetism: A spin group study

    cond-mat.str-el 2025-07 conditional novelty 6.0 of 10

    Odd-parity altermagnetism in collinear magnets requires broken nonmagnetic time-reversal symmetry plus a C2 rotation combined with inversion or mirror symmetry connecting opposite-spin sublattices, and the Haldane-Hub...

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