Ground state of a mixture of two species of fermionic atoms in a one-dimensional optical lattice
Ground state of a mixture of two species of fermionic atoms in a one-dimensional optical lattice
In this paper, we investigate the ground state properties of a mixture of two species of fermionic atoms in one-dimensional optical lattice, as described by the asymmetric Hubbard model. The quantum phase transition from density wave to phase separation is investigated by studying both the corresponding charge order parameter and …