Collisionless spin dynamics in a magnetic field gradient
arXiv:1503.02131 · doi:10.1103/PhysRevA.91.043613
Abstract
We study the collisionless spin dynamics of a harmonically trapped Fermi gas in a magnetic field gradient. In the absence of interactions, the system evolution is periodic: the magnetization develops twists, which evolve into a longitudinal polarization. Recurrences follow. For weak interaction, the exchange interactions lead to beats in these oscillations. We present an array of analytic and numerical techniques for studying this physics.
5 pages, 4 figures
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