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.
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Cluster perturbation theory on the Hubbard model yields doping- and temperature-dependent electronic and spin spectra that qualitatively match cuprate experiments, with short-range antiferromagnetism implicated in pseudogap formation.
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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.
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Doping- and temperature-dependent electronic structure and spin dynamics in the Hubbard model on a square lattice within cluster perturbation theory
Cluster perturbation theory on the Hubbard model yields doping- and temperature-dependent electronic and spin spectra that qualitatively match cuprate experiments, with short-range antiferromagnetism implicated in pseudogap formation.