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Numerical analytic continuation of Euclidean data

Tripolt, Ralf-Arno ; Gubler, Philipp ; Ulybyshev, Maksim ; von Smekal, Lorenz



Abstract

In this work we present a direct comparison of three different numerical analytic continuation methods: the Maximum Entropy Method, the Backus-Gilbert method and the Schlessinger point or Resonances Via Rade method. First, we perform a benchmark test based on a model spectral function and study the regime of applicability of these methods depending on the number of input points and their ...

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