Quantum critical scaling behavior of deconfined spinons
| dc.creator | Nogueira, Flavio S. | |
| dc.creator | Kragset, Steinar | |
| dc.creator | Sudbo, Asle | |
| dc.date | 2007-08-27 | |
| dc.date | 2007-11-16 | |
| dc.date.accessioned | 2026-07-07T11:37:01Z | |
| dc.date.available | 2026-07-07T11:37:01Z | |
| dc.description | We perform a renormalization group analysis of some important effective field theoretic models for deconfined spinons. We show that deconfined spinons are critical for an isotropic SU(N) Heisenberg antiferromagnet, if $N$ is large enough. We argue that nonperturbatively this result should persist down to N=2 and provide further evidence for the so called deconfined quantum criticality scenario. Deconfined spinons are also shown to be critical for the case describing a transition between quantum spin nematic and dimerized phases. On the other hand, the deconfined quantum criticality scenario is shown to fail for a class of easy-plane models. For the cases where deconfined quantum criticality occurs, we calculate the critical exponent $η$ for the decay of the two-spin correlation function to first-order in $ε=4-d$. We also note the scaling relation $η=d+2(1-ϕ/ν)$ connecting the exponent $η$ for the decay to the correlation length exponent $ν$ and the crossover exponent $ϕ$. | |
| dc.description | 4.1 pages, no figures, references added; Version accepted for publication in PRB (RC) | |
| dc.identifier | https://arxiv.org/abs/0708.3633 | |
| dc.identifier | http://arxiv.org/abs/0708.3633 | |
| dc.identifier | Phys.Rev.B76:220403,2007 | |
| dc.identifier | doi:10.1103/PhysRevB.76.220403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199066 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Quantum critical scaling behavior of deconfined spinons | |
| dc.type | text |