Simple spin models with non-concave entropies
| dc.creator | Touchette, Hugo | |
| dc.date | 2005-04-01 | |
| dc.date | 2008-01-24 | |
| dc.date.accessioned | 2026-07-07T08:56:07Z | |
| dc.date.available | 2026-07-07T08:56:07Z | |
| dc.description | Two simple spin models are studied to show that the microcanonical entropy can be a non-concave function of the energy, and that the microcanonical and canonical ensembles can give non-equivalent descriptions of the same system in the thermodynamic limit. The two models are simple variations of the classical paramagnetic spin model of non-interacting spins and are solved as easily as the latter model. | |
| dc.description | v1: 11 pages, 5 figures. v2: Short, published version of v1, 6 pages, 3 figures. See v1 for the solutions of some of the problems listed in v2 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0504020 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0504020 | |
| dc.identifier | Am. J. Phys. 76, 26-30, 2008 | |
| dc.identifier | doi:10.1119/1.2794350 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/146499 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Simple spin models with non-concave entropies | |
| dc.type | text |