Dynamical approach to analytic continuation of quantum Monte Carlo data

Mark Jarrell*, Ofer Biham

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A new method of analytic continuation from a Matsubara single-particle Greens function to a spectral function is presented. We recast this problem onto a new one where we dynamically minimize a suitably defined potential. Our method allows the imposition of physical constraints such as smoothness and adherence to the sum rule. The method is applied to the symmetric Anderson impurity model. We show how the spectral function changes with the Kondo temperature TK, the hybridization witdth ", and the Coulomb potential U.

Original languageAmerican English
Pages (from-to)2504-2507
Number of pages4
JournalPhysical Review Letters
Volume63
Issue number22
DOIs
StatePublished - 1989
Externally publishedYes

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