Sound propagation in elongated superfluid fermion clouds
| dc.creator | Capuzzi, P. | |
| dc.creator | Vignolo, P. | |
| dc.creator | Federici, F. | |
| dc.creator | Tosi, M. P. | |
| dc.date | 2005-09-13 | |
| dc.date.accessioned | 2026-07-07T06:26:35Z | |
| dc.date.available | 2026-07-07T06:26:35Z | |
| dc.description | We use hydrodynamic equations to study sound propagation in a superfluid Fermi gas inside a strongly elongated cigar-shaped trap, with main attention to the transition from the BCS to the unitary regime. We treat first the role of the radial density profile in the quasi-onedimensional limit and then evaluate numerically the effect of the axial confinement in a configuration in which a hole is present in the gas density at the center of the trap. We find that in a strongly elongated trap the speed of sound in both the BCS and the unitary regime differs by a factor sqrt{3/5} from that in a homogeneous three-dimensional superfluid. The predictions of the theory could be tested by measurements of sound-wave propagation in a set-up such as that exploited by M.R. Andrews et al. [Phys. Rev. Lett. 79, 553 (1997)] for an atomic Bose-Einstein condensate. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0509323 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0509323 | |
| dc.identifier | Phys. Rev. A 73, 021603(R) (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.73.021603 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97150 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Sound propagation in elongated superfluid fermion clouds | |
| dc.type | text |