Dynamical solitons and boson fractionalization in cold-atom topological insulators

Daniel González-Cuadra, Alexandre Dauphin, Przemysław R. Grzybowski +2

We study the ${\mathbb{Z}}_2$ Bose-Hubbard model at incommensurate densities, which describes a one-dimensional system of interacting bosons whose tunneling is dressed by a dynamical…