The One‐Dimensional Bose–Fermi–Hubbard Model in the Limit of Fast Fermions
The One‐Dimensional Bose–Fermi–Hubbard Model in the Limit of Fast Fermions
We discuss the ground-state phase diagram of the one-dimensional Bose-Fermi-Hubbard model (BFHM) in the limit of fast fermions based on an effective boson model. We give a detailed derivation of the effective model with long-range RKKY-type interactions, discuss its range of validity and provide a deeper insight into its implications. …