Collapse transition in mixtures of Bosons and Fermions
| dc.creator | Chui, S. T. | |
| dc.creator | Ryzhov, V. N. | |
| dc.date | 2002-11-19 | |
| dc.date | 2003-01-10 | |
| dc.date.accessioned | 2026-07-07T02:48:15Z | |
| dc.date.available | 2026-07-07T02:48:15Z | |
| dc.description | For mixtures of Bose and Fermi alkali atoms, the Fermion degrees of freedom can be integrated out in their {\bf finite temperature} partition function. The final result can be expanded as a power series in the Boson density. Under appropriate conditions, the pairwise interaction between the bosons can be changed from positive to negative at a low enough temperature by the Fermion-mediated term and the Boson cloud may then collapse. For attractive Fermion-Boson interactions, there is also a collapse of the Fermion cloud. This transition is first order (discontinuous) because the leading order nonlinear interaction term between the Bosons is {\bf third order in Boson density with a negative coefficient}. We discuss the finite temperature phase diagram of this transition. Our result may provide for an explanation of recent experimental observations by Modungo and coworkers. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0211411 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0211411 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/20331 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Collapse transition in mixtures of Bosons and Fermions | |
| dc.type | text |