Quantum Phase Transition in the Infinite Dimensional Hubbard Model

Yasuo Y. Suzuki, Shin Ichi Saito, Susumu Kurihara

    Research output: Contribution to journalArticle

    Abstract

    We investigated the ground state of the infinite dimensional Hubbard model for both attractive and repulsive interactions by applying Gutzwiller type variational wave functions. Our variational wave functions have lower energies than the simple BCS wave function for the attractive case, and lower energies than the Brinkman-Rice state for the repulsive case. We found that the system has several phases depending on the density of electrons and the interaction strength. Investigated phases include antiferromagnetic, Fermi liquid, superconducting, charge density wave, and supersolid phases. The last one is a coexistence phase of superconducting and charge density wave states.

    Original languageEnglish
    Pages (from-to)897-902
    Number of pages6
    JournalJournal of Low Temperature Physics
    Volume113
    Issue number5-6
    Publication statusPublished - 1998

    Fingerprint

    Hubbard model
    Wave functions
    Charge density waves
    Phase transitions
    wave functions
    Fermi liquids
    rice
    Ground state
    interactions
    ground state
    energy
    Electrons
    electrons

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Suzuki, Y. Y., Saito, S. I., & Kurihara, S. (1998). Quantum Phase Transition in the Infinite Dimensional Hubbard Model. Journal of Low Temperature Physics, 113(5-6), 897-902.

    Quantum Phase Transition in the Infinite Dimensional Hubbard Model. / Suzuki, Yasuo Y.; Saito, Shin Ichi; Kurihara, Susumu.

    In: Journal of Low Temperature Physics, Vol. 113, No. 5-6, 1998, p. 897-902.

    Research output: Contribution to journalArticle

    Suzuki, YY, Saito, SI & Kurihara, S 1998, 'Quantum Phase Transition in the Infinite Dimensional Hubbard Model', Journal of Low Temperature Physics, vol. 113, no. 5-6, pp. 897-902.
    Suzuki, Yasuo Y. ; Saito, Shin Ichi ; Kurihara, Susumu. / Quantum Phase Transition in the Infinite Dimensional Hubbard Model. In: Journal of Low Temperature Physics. 1998 ; Vol. 113, No. 5-6. pp. 897-902.
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