Roton softening and supersolidity in Rb spinor condensates
| dc.creator | Cherng, R. W. | |
| dc.creator | Demler, E. | |
| dc.date | 2008-06-12 | |
| dc.date.accessioned | 2026-07-07T09:44:09Z | |
| dc.date.available | 2026-07-07T09:44:09Z | |
| dc.description | Superfluids with a tendency towards periodic crystalline order have both a phonon and roton like spectrum of collective modes. The softening of the roton spectrum provides one route to a supersolid. We show that roton softening occurs in 87Rb spinor condensates once dipolar interactions and spin dynamics are taken into account. By including the effects of a quasi-two-dimensional geometry and rapid Larmor precession, we show a dynamical instability develops in the collective mode spectrum at finite wavevectors. We construct phase diagrams showing a variety of instabilities as a function of the direction of the magnetic field and strength of the quadratic Zeeman shift. Our results provide a possible explanation of current experiments in the Berkeley group Phys. Rev. Lett. 100:170403 (2008). | |
| dc.description | 8 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0806.1991 | |
| dc.identifier | http://arxiv.org/abs/0806.1991 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/162767 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Roton softening and supersolidity in Rb spinor condensates | |
| dc.type | text |