Effects of trap anisotropy on impurity scattering regime in a Fermi gas
| dc.creator | Capuzzi, P. | |
| dc.creator | Vignolo, P. | |
| dc.creator | Tosi, M. P. | |
| dc.date | 2005-06-20 | |
| dc.date.accessioned | 2026-07-07T06:25:47Z | |
| dc.date.available | 2026-07-07T06:25:47Z | |
| dc.description | We evaluate the low-lying oscillation modes and the ballistic expansion properties of a harmonically trapped gas of fermionic K40 atoms containing thermal Rb87 impurities as functions of the anisotropy of the trap. Numerical results are obtained by solving the Vlasov-Landau equations for the one-body phase-space distribution functions and are used to test simple scaling Ansatzes. Starting from the gas in a weak impurity-scattering regime inside a spherical trap, the time scales associated to motions in the axial and azimuthal directions enter into competition as the trap is deformed to an elongated cigar-like shape. This competition gives rise to coexistence of collisionless and hydrodynamic behaviors in the low-lying surface modes of the gas as well as to a dependence of the aspect ratio of the expanding cloud on the collision time. | |
| dc.description | 6 pages, 4 figures, accepted for publication in Phys. Rev. A | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0506496 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0506496 | |
| dc.identifier | Phys. Rev. A 72, 013618 (2005) | |
| dc.identifier | doi:10.1103/PhysRevA.72.013618 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/96926 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Effects of trap anisotropy on impurity scattering regime in a Fermi gas | |
| dc.type | text |