Efficient description of strongly correlated electrons with mean-field cost.

Authors :: Boguslawski, Katharina
Tecmer, Pawei
Ayers, Paul W.
Bultinck, Patrick
Baerdemacker, Stijn De
Van Neck, Dimitri
Source :: Physical Review B: Condensed Matter & Materials Physics. May2014, Vol. 89 Issue 20, p201106-1-201106-4. 4p.
Publication Year :: 2014
Abstract: We present an efficient approach to the electron correlation problem that is well suited for strongly interacting many-body systems, but requires only mean-field-like computational cost. The performance of our approach is illustrated for one-dimensional Hubbard rings with different numbers of sites, and for the nonrelativistic quantum-chemical Hamiltonian exploring the symmetric dissociation of the H50 hydrogen chain. [ABSTRACT FROM AUTHOR]