ana_cont: Python package for analytic continuation

Josef Kaufmann (1); Karsten Held (1) ((1) Institute for Solid State Physics TU Wien)

ana_cont: Python package for analytic continuation

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arxiv 2105.11211 v1 pith:YRUMJ3D7 submitted 2021-05-24 cond-mat.str-el

Josef Kaufmann (1) , Karsten Held (1) ((1) Institute for Solid State Physics TU Wien) This is my paper · ORCID

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keywords analyticcontcontinuationpackagepythonapproximantsavailablebosonic

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We present the Python package ana_cont for the analytic continuation of fermionic and bosonic many-body Green's functions by means of either the Pade approximants or the maximum entropy method. The determination of hyperparameters and the implementation are described in detail. The code is publicly available on GitHub, where also documentation and learning resources are provided.

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Eliashberg Theory and Superfluid Stiffness of Band-Off-Diagonal Pairing in Twisted Graphene
cond-mat.supr-con 2025-01 conditional novelty 6.0 of 10

Frequency-dependent Eliashberg calculations show band-off-diagonal pairing in twisted graphene stays purely interband, mixes even and odd frequency components, and can explain non-saturating superfluid stiffness.

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