Ghost-RISB is generalized to electron-phonon systems and reproduces DMFT benchmarks on the Hubbard-Holstein model, showing that superconducting order is suppressed by a phonon-overlap (Franck-Condon) factor in the bipolaronic regime.
Mejuto-Zaera and M
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Ghost-RISB for Correlated Electron-Phonon Systems: Application to the Hubbard-Holstein Model
Ghost-RISB is generalized to electron-phonon systems and reproduces DMFT benchmarks on the Hubbard-Holstein model, showing that superconducting order is suppressed by a phonon-overlap (Franck-Condon) factor in the bipolaronic regime.