Speaker
Description
The competition between short-range and cavity-mediated infinite-range interactions in a cavity-boson system leads to the existence of a superfluid and a Mott-insulator phase within the self-organized regime. We quantitatively compare the steady-state phase boundaries of this transition measured in experiments and simulated using the Multiconfigurational Time-Dependent Hartree Method for Indistinguishable Particles. We reduce the computational cost by reducing the full system to a 2D four-well potential. We argue that the validity of this representation comes from the nature of both the cavity-atomic system and the Bose-Hubbard physics. The experimentally measured and theoretically predicted phase boundaries agree reasonably. We propose a new approach for the quantitative determination of the superfluid--Mott-insulator boundary.