Efficient treatment of two-particle vertices in dynamical mean-field theory

Jan Kuneš
Phys. Rev. B 83, 085102 – Published 9 February 2011

Abstract

We present an efficient and numerically stable algorithm for calculation of two-particle response functions within the dynamical mean-field theory. The technique is based on inferring the high-frequency asymptotic behavior of the irreducible vertex function from the local dynamical susceptibility. The algorithm is tested on several examples. In all cases rapid convergence of the vertex function toward its asymptotic form is observed.

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  • Received 19 October 2010

DOI:https://doi.org/10.1103/PhysRevB.83.085102

©2011 American Physical Society

Authors & Affiliations

Jan Kuneš

  • Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, CZ-16253 Praha 6, Czech Republic

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Issue

Vol. 83, Iss. 8 — 15 February 2011

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