An interaction-flow fRG framework regulates both propagators and bare interactions via single-boson exchange, allowing temperature flows for retarded-interaction models and tested on Anderson impurity and electron-phonon systems.
Al-Eryani, Diagrammatic bosonisation, aspects of criticality, and the Hohenberg-Mermin-Wagner Theo- rem in parquet approaches (2025), arXiv:2509.15094
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Functional renormalization with interaction flows: A single-boson exchange perspective and application to electron-phonon systems
An interaction-flow fRG framework regulates both propagators and bare interactions via single-boson exchange, allowing temperature flows for retarded-interaction models and tested on Anderson impurity and electron-phonon systems.