Excited state spectra at the superfluid-insulator transition out of paired condensates
| dc.creator | Powell, Stephen | |
| dc.creator | Sachdev, Subir | |
| dc.date | 2006-08-28 | |
| dc.date | 2006-09-27 | |
| dc.date.accessioned | 2026-07-07T12:59:53Z | |
| dc.date.available | 2026-07-07T12:59:53Z | |
| dc.description | We describe gapped single-particle and collective excitations across a superfluid to insulator quantum phase transition of particles (bosons or fermions) in a periodic potential, with an even number of particles per unit cell. We demonstrate that the dynamics is controlled by a quantum impurity problem of a localized particle interacting with the bulk critical modes. Critical exponents are determined by a renormalization group analysis. We discuss applications to spin oscillations of ultracold atoms in optical lattices, and to the electronic phases in the cuprate and related compounds. | |
| dc.description | 4 pages, 1 figure; fixed reference | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608611 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608611 | |
| dc.identifier | Physical Review A 75, 031601(R) (2007) | |
| dc.identifier | doi:10.1103/PhysRevA.75.031601 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225707 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Quantum Gases | |
| dc.subject | Superconductivity | |
| dc.title | Excited state spectra at the superfluid-insulator transition out of paired condensates | |
| dc.type | text |