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

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

2010-10-19

arxiv.org/abs/1010.3809v2

Phys. Rev. B 83, 085102 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 9 figures, revised acknowledgement

Scientific paper

10.1103/PhysRevB.83.085102

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 towards its asymptotic form is observed.

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