Spin-flip-induced superfluidity in a ring of spinful hard-core bosons

The t - J Hamiltonian of the spinful hard-core bosonic ring in Nagaoka limit is solved. energy spectrum becomes quantized due to presence spin, where each level corresponds a cyclic permutation state spin chains. ground true ferromagnetic when contains N = 2, 3 bosons; for all other it mixture and non-ferromagnetic states. This behaviour different from fermionic ring, only 3. It shown that intrinsic generated gauge fields are analogous synthetic by rotation either condensate or confining potential. argued low lying excited levels flipped states intrinsically support superfluidity. Possible ways experimentally verify these results also discussed.