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Dynamics of trapped two-component Fermi gas: temperature dependence of the transition from collisionless to collisional regime | | F.Toschi
; P.Vignolo
; S.Succi
; M.P.Tosi
; | | Date: |
25 Oct 2002 | | Journal: | Phys. Rev. A 67 (2003) 041605(R) | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Affiliation: | SNS-Pisa and IAC-Roma | | Abstract: | 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. | | Source: | arXiv, cond-mat/0210577 | | Services: | Forum | Review | PDF | Favorites | |
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