Weak-coupling phase diagram of the extended Hubbard model with correlated-hopping interaction
Weak-coupling phase diagram of the extended Hubbard model with correlated-hopping interaction
A one-dimensional model of interacting electrons with on-site $U$, nearest-neighbor $V$, and correlated-hopping interaction $T^{\ast}$ is studied at half-filling using the continuum-limit field theory approach. The ground state phase diagram is obtained for a wide range of coupling constants. In addition to the insulating spin- and charge-density wave phases for …