Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-10-25
Phys. Rev. A 67 (2003) 041605(R)
Physics
Condensed Matter
Statistical Mechanics
4 pages, 3 figures
Scientific paper
10.1103/PhysRevA.67.041605
We develop a numerical method to study the dynamics of a two-component atomic Fermi gas trapped inside a harmonic potential at temperature T well below the Fermi temperature Tf. We examine the transition from the collisionless to the collisional regime down to T=0.2 Tf and find good qualitative agreement with the experiments of B. DeMarco and D.S. Jin [Phys. Rev. Lett. vol. 88, 040405 (2002)]. We demonstrate a twofold role of temperature on the collision rate and on the efficiency of collisions. In particular we observe an hitherto unreported effect, namely that the transition to hydrodynamic behavior is shifted towards lower collision rates as temperature decreases.
Succi Sauro
Toschi Federico
Tosi Mario P.
Vignolo Patrizia
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