Crystalline Boson Phases in Harmonic Traps: Beyond the Gross-Pitaevskii Mean Field
Crystalline Boson Phases in Harmonic Traps: Beyond the Gross-Pitaevskii Mean Field
Strongly-interacting bosons in two-dimensional harmonic traps are described through breaking of rotational symmetry at the Hartree-Fock level and subsequent symmetry restoration via projection techniques, thus incorporating correlations beyond the Gross-Pitaevskii (GP) solution. The bosons localize and form polygonal-ringlike crystalline patterns, both for a repulsive contact potential and a Coulomb interaction, …