Fulfillment of sum rules and Ward identities in the multiloop functional renormalization group solution of the Anderson impurity model

Fulfillment of sum rules and Ward identities in the multiloop functional renormalization group solution of the Anderson impurity model

We investigate several fundamental characteristics of the multiloop functional renormalization group (mfRG) flow by hands of its application to a prototypical many-electron system: the Anderson impurity model (AIM). We first analyze the convergence of the algorithm in the different parameter regions...

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Bibliographic Details
Main Authors:	Patrick Chalupa-Gantner, Fabian B. Kugler, Cornelia Hille, Jan von Delft, Sabine Andergassen, Alessandro Toschi
Format:	Article
Language:	English
Published:	American Physical Society 2022-04-01
Series:	Physical Review Research
Online Access:	http://doi.org/10.1103/PhysRevResearch.4.023050

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