Spin Drag and Spin-Charge Separation in Cold Fermi Gases
| dc.creator | Polini, Marco | |
| dc.creator | Vignale, Giovanni | |
| dc.date | 2007-02-20 | |
| dc.date.accessioned | 2026-07-07T08:12:45Z | |
| dc.date.available | 2026-07-07T08:12:45Z | |
| dc.description | Low-energy spin and charge excitations of one-dimensional interacting fermions are completely decoupled and propagate with different velocities. These modes however can decay due to several possible mechanisms. In this paper we expose a new facet of spin-charge separation: not only the speeds but also the damping rates of spin and charge excitations are different. While the propagation of long-wavelength charge excitations is essentially ballistic, spin propagation is intrinsically damped and diffusive. We suggest that cold Fermi gases trapped inside a tight atomic waveguide offer the opportunity to measure the spin-drag relaxation rate that controls the broadening of a spin packet. | |
| dc.description | 4 pages, 4 figures, submitted | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0702466 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0702466 | |
| dc.identifier | Phys. Rev. Lett. 98, 266403 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.98.266403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/132566 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spin Drag and Spin-Charge Separation in Cold Fermi Gases | |
| dc.type | text |