Spin-drag relaxation time in one-dimensional spin-polarized Fermi gases
| dc.creator | Rainis, Diego | |
| dc.creator | Polini, Marco | |
| dc.creator | Tosi, M. P. | |
| dc.creator | Vignale, G. | |
| dc.date | 2008-01-15 | |
| dc.date.accessioned | 2026-07-07T08:54:36Z | |
| dc.date.available | 2026-07-07T08:54:36Z | |
| dc.description | Spin propagation in systems of one-dimensional interacting fermions at finite temperature is intrinsically diffusive. The spreading rate of a spin packet is controlled by a transport coefficient termed "spin drag" relaxation time $τ_{\rm sd}$. In this paper we present both numerical and analytical calculations of $τ_{\rm sd}$ for a two-component spin-polarized cold Fermi gas trapped inside a tight atomic waveguide. At low temperatures we find an activation law for $τ_{\rm sd}$, in agreement with earlier calculations of Coulomb drag between slightly asymmetric quantum wires, but with a different and much stronger temperature dependence of the prefactor. Our results provide a fundamental input for microscopic time-dependent spin-density functional theory calculations of spin transport in 1D inhomogeneous systems of interacting fermions. | |
| dc.description | 7 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0801.2324 | |
| dc.identifier | http://arxiv.org/abs/0801.2324 | |
| dc.identifier | Phys. Rev. B 77, 035113 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.77.035113 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/145992 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spin-drag relaxation time in one-dimensional spin-polarized Fermi gases | |
| dc.type | text |