Spin segregation via dynamically induced long-range interaction in a system of ultracold fermions
arXiv:1104.1965 · doi:10.1103/PhysRevA.84.063607
Abstract
We investigate theoretically the time evolution of a one-dimensional system of spin-1/2 fermions in a harmonic trap after, initially, a spiral spin configuration far-from equilibrium is created. We predict a spin segregation building up in time already for weak interaction under realistic experimental conditions. The effect relies on the interplay between exchange interaction and the harmonic trap, and it is found for a wide range of parameters. It can be understood as a consequence of an effective, dynamically induced long-range interaction that is derived by integrating out the rapid oscillatory dynamics in the trap.
8 pages, 4 figures
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- Energy-Resolved Information Scrambling in Energy-Space Lattices
- Relaxation dynamics of an isolated large-spin Fermi gas far from equilibrium
- Spin dynamics in a spin-orbit coupled Fermi gas
- Verifying a quasi-classical spin model of perturbed quantum rewinding in a Fermi gas
- Kinetic theory of spin-polarized systems in electric and magnetic fields with spin-orbit coupling: II. RPA response functions and collective modes
- Collective dynamical Fermi suppression of optically-induced inelastic scattering
- Chirality-Induced Spin Currents in a Fermi Gas