Cluster perturbation theory in Hubbard model exactly taking into account the short-range magnetic order in 2 × 2 cluster

Author: Nikolaev S.   Ovchinnikov S.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 1063-7761

Source: Journal of Experimental and Theoretical Physics, Vol.111, Iss.4, 2010-10, pp. : 635-644

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