Dynamical Mean Field Theory with the Density Matrix Renormalization Group

Details Dynamical Mean Field Theory with the Density Matrix Renormalization Group Dynamical Mean Field Theory with the Density Matrix Renormalization Group

2004-03-05

arxiv.org/abs/cond-mat/0403169v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.246403

A new numerical method for the solution of the Dynamical Mean Field Theory's self-consistent equations is introduced. The method uses the Density Matrix Renormalization Group technique to solve the associated impurity problem. The new algorithm makes no a priori approximations and is only limited by the number of sites that can be considered. We obtain accurate estimates of the critical values of the metal-insulator transitions and provide evidence of substructure in the Hubbard bands of the correlated metal. With this algorithm, more complex models having a larger number of degrees of freedom can be considered and finite-size effects can be minimized.

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