Brief Communications

Perturbation theory for the Matsubara Green function with the Hamiltonian of the one-impurity problem: The Dyson equation

A. M. Sarry^ab, M. F. Sarry<sup>ab

a</sup> Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region
^b Institute of Experimental Physics, Institute of Theoretical and Computational Physics, Russian Federal Nuclear Center, Sarov

Abstract: A technique for computing the thermodynamic (Matsubara) Green function for the Hubbard Hamiltonian as applied to the one-impurity problem is proposed. There are only four states in this problem, which makes it solvable.

Received: 17.03.2010

 English version: Technical Physics, 2011, 56:4, 550–552

Bibliographic databases:

•