Extraction of Spectral Functions from Dyson-Schwinger Studies via the Maximum Entropy Method

Abstract

It is shown how to apply the Maximum Entropy Method (MEM) to numerical Dyson-Schwinger studies for the extraction of spectral functions of correlators from their corresponding Euclidean propagators. Differences to the application in lattice QCD are emphasized and, as an example, the spectral functions of massless quarks in cold and dense matter are presented.

Comments: 16 pages, 7 figures