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Density matrix spectra and order parameters in the 1D extended Hubbard model

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  • Wing Chi Yu

    (The Chinese University of Hong Kong)

  • Shi-Jian Gu

    (The Chinese University of Hong Kong)

  • Hai-Qing Lin

    (Beijing Computational Science Research Center)

Abstract

Without any knowledge of the symmetry existing in a system, we derive the exact forms of the order parameters which show long-range correlations in the ground state of the one-dimensional (1D) extended Hubbard model using a quantum information approach. Our work demonstrates that the quantum information approach can help us to find the explicit form of the order parameter, which could not be derived systematically via traditional methods in the condensed matter theory.

Suggested Citation

  • Wing Chi Yu & Shi-Jian Gu & Hai-Qing Lin, 2016. "Density matrix spectra and order parameters in the 1D extended Hubbard model," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(10), pages 1-8, October.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:10:d:10.1140_epjb_e2016-70361-6
    DOI: 10.1140/epjb/e2016-70361-6
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    Statistical and Nonlinear Physics;

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