Fragmented many-body states of a spin-2 Bose gas
Fragmented many-body states of a spin-2 Bose gas
We investigate the fragmented many-body ground states of a spin-2 Bose gas in zero magnetic field. We point out that the exact ground state is not simply an average over rotationally-invariant mean-field states, in contrast to the spin-1 case with even number of particles $N$. While for some certain parameters …