Excitation spectrum and supersolidity of a two-leg bosonic ring ladder
We consider a system of weakly interacting bosons confined on a planar double lattice ring subjected to two artificial gauge fields... Our analysis reveals supersolid features as well as Josephson modes, corresponding to out-of-phase modes of the finite ring.
arXiv:1910.06410 (2019) / Phys. Rev. A 101, 033618 (2020)