Quantum critical dynamics of the two-dimensional Bose gas
| dc.creator | Sachdev, Subir | |
| dc.creator | Dunkel, Emily R. | |
| dc.date | 2005-10-13 | |
| dc.date.accessioned | 2026-07-07T06:44:22Z | |
| dc.date.available | 2026-07-07T06:44:22Z | |
| dc.description | The dilute, two-dimensional Bose gas exhibits a novel regime of relaxational dynamics in the regime k_B T > |μ| where T is the absolute temperature and μis the chemical potential. This may also be interpreted as the quantum criticality of the zero density quantum critical point at μ=0. We present a theory for this dynamics, to leading order in 1/\ln (Λ/ (k_B T)), where Λis a high energy cutoff. Although pairwise interactions between the bosons are weak at low energy scales, the collective dynamics are strongly coupled even when \ln (Λ/T) is large. We argue that the strong-coupling effects can be isolated in an effective classical model, which is then solved numerically. Applications to experiments on the gap-closing transition of spin gap antiferromagnets in an applied field are presented. | |
| dc.description | 9 pages, 10 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0510365 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0510365 | |
| dc.identifier | Physical Review B 73, 085116 (2006) | |
| dc.identifier | doi:10.1103/PhysRevB.73.085116 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/102758 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Quantum critical dynamics of the two-dimensional Bose gas | |
| dc.type | text |