We’re excited to announce the publication of our latest paper in the Journal of Open Source Software: M. Leucke, R. L. Panadés-Barrueta, E. E. Bas, D. Golze, “Analytic continuation component of the GreenX library: robust Padé approximants with symmetry constraints”, Journal of Open Source Software 2025, 10 (109), 7859.
The paper presents GX-AC, a new component of the GreenX library for performing analytic continuation using Padé approximants. It offers a robust and flexible Fortran API and addresses common numerical challenges using multiple-precision arithmetic and other stabilization techniques.
GX-AC is open-source and available under the Apache 2.0 license.