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cond-mat.str-el2026
Dynamical vertex approximation for retarded interactions: Application to the Hubbard-Holstein model
Emin Moghadas, Samuele Giuli, Massimo Capone +1
We extend the dynamical vertex approximation (DA), in its most commonly used ladder-version, to systems with retarded electronic interactions. Such an extended scheme, which we…
cond-mat.str-el2026
Ghost-RISB for Correlated Electron-Phonon Systems: Application to the Hubbard-Holstein Model
Samuele Giuli, Ricardo J. Campos-Lopes, Emin Moghadas +1
We develop a generalization of the ghost-rotationally-invariant slave-boson (ghost-RISB) method that incorporates local phonon modes coupled to arbitrary on-site electronic degrees…