2011/10/31 by Shun Uchino, Norio Kawakami · 1 citation
Physics and Astronomy · #Bethe ansatz #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermi Gamma-ray Space Telescope #Mott insulator #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum many-body systems #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #Superfluidity #Ultracold atom #cond-mat.quant-gas #hep-th
paper · pdf · doi:10.1103/physreva.85.013610
published as Phys.Rev.A85:013610,2012 · 8 pages, 5 figures
openalex publication_date 2012/01/05 · arxiv created 2012/01/07 · arxiv updated 2012/01/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Motivated by the recent experimental realization of synthetic gauge fields in ultracold atoms, we investigate one-dimensional attractive Fermi gases with a time-dependent gauge flux on the spin sector. By combining the methods of the Bethe ansatz with complex twists and Landau-Dykhne, it is shown that a spin-depairing transition occurs, which may represent a nonequilibrium transition from fermionic superfluids to normal states with spin currents caused by a many-body quantum tunneling. For the case of the Hubbard ring at half filling, our finding forms a dual concept with the dielectric breakdown of the Mott insulator discussed in [Phys. Rev. B 81, 033103 (2010)]. We analyze cases of arbitrary filling and continuum model, and show how filling affects the transition probability.