Transition to hydrodynamics in colliding fermion clouds

2003/10/28 by F. Toschi, F Toschi, P Capuzzi +7 · 2 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Dust and Plasma Wave Phenomena #High-Energy Particle Collisions Research #cond-mat

paper · pdf · doi:10.1088/0953-4075/37/7/056

published as J. Phys. B.: At. Mol. Opt. Phys. 37, S91-S99 (2004) · 11 pages, iop style. submitted to the proceedings of the Levico 2003 workshop

arxiv created 2003/10/28 · openalex publication_date 2004/03/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We study the transition from the collisionless to the hydrodynamic regime in a two-component spin-polarized mixture of 40 K atoms by exciting its dipolar oscillation modes inside harmonic traps. The time evolution of the mixture is described by the Vlasov–Landau equations and numerically solved with a fully three-dimensional concurrent code. We observe a master/slave behaviour of the oscillation frequencies depending on the dipolar mode that is excited. Regardless of the initial conditions, the transition to hydrodynamics is found to shift to lower values of the collision rate as the temperature decreases.

Cited by

• Effects of collisions against thermal impurities in the dynamics of a trapped fermion gas
• Sound propagation in elongated superfluid fermionic clouds

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