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

Wing Chi Yu (), Shi-Jian Gu and Hai-Qing Lin
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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

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 10, 1-8

Abstract: 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.

Keywords: Statistical; and; Nonlinear; Physics (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70361-6

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