2013/10/28 by Juraj Radic, Juraj Radić, Stefan S. Natu +1
Physics and Astronomy · #Atomic and Subatomic Physics Research #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermi Gamma-ray Space Telescope #Fermi gas #Fermion #Magnetic field #Magnetization #Physics #Quantum many-body systems #Quantum mechanics #Spin (aerodynamics) #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.112.095302
published as Phys. Rev. Lett. 112, 095302 (2014) · 5 pages, 3 figures
arxiv created 2013/10/28 · openalex publication_date 2014/03/06 · arxiv updated 2014/03/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the time evolution of the magnetization in a Rashba spin-orbit coupled Fermi gas, starting from a fully polarized initial state. We model the dynamics using a Boltzmann equation, which we solve in the Hartree-Fock approximation. The resulting nonlinear system of equations gives rise to three distinct dynamical regimes with qualitatively different asymptotic behaviors of the magnetization at long times. The distinct regimes and the transitions between them are controlled by the ratio of interaction and spin-orbit coupling strength λ: for small λ, the magnetization decays to zero. For intermediate λ, it displays undamped oscillations about zero, and for large λ, a partially magnetized state is dynamically stabilized. The dynamics we find is a spin analog of interaction induced self-trapping in double-well Bose Einstein condensates. The predicted phenomena can be realized in trapped Fermi gases with synthetic spin-orbit interactions.