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Spin-flip-induced superfluidity in a ring of spinful hard-core bosonsстатья
- Авторы: Kesharpu K.K., Kochetov E.A.
- Журнал: Physical Review A - Atomic, Molecular, and Optical Physics
- Том: 106
- Номер: 3
- Год издания: 2022
- Издательство: American Physical Society
- Местоположение издательства: United States
- Номер статьи: 033323
- DOI: 10.1103/physreva.106.033323
- Аннотация: The t−J Hamiltonian of the spinful hard-core bosonic ring in the Nagaoka limit is solved. The energy spectrum becomes quantized due to presence of spin, where each energy level corresponds to a cyclic permutation state of the spin chains. The ground state is true ferromagnetic when the ring contains N=2 and 3 spinful hard-core bosons; for all other N it is a mixture of the ferromagnetic and nonferromagnetic states. This behavior is different from the fermionic ring, where ground state is true ferromagnetic only for N=3. It is shown that the intrinsic spin-generated gauge fields are analogous to the synthetic gauge fields generated by rotation of either the condensate or the confining potential. It is argued that the low-lying excited levels of the spin-flipped states intrinsically support the superfluidity. Possible ways to experimentally verify these results are also discussed.
- Добавил в систему: Кешарпу Каушаль Кумар