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    Electronic Resource
    Electronic Resource
    Hierarchies of stability regions for -pairing superconducting ground states of generalized Hubbard models (2000)
    Springer
    The European physical journal 14 (2000), S. 523-526 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 74.20.-z Theories and models of superconducting state
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: For a class of generalized one dimensional Hubbard models, we study the stability region for the superconducting -pairing ground state. We exploit the Optimum Ground State (OGS) approach and the Lanczos diagonalization procedure to derive a sequence of improved bounds. We show that some pieces of the stability boundary are asymptotic, namely independent on the OGS cluster size. The phenomenon is explained by studying the properties of certain exact eigenstates of the OGS Hamiltonians.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510051061
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