Phase Transitions in Non-extensive Spin Systems
| dc.creator | Botet, Robert | |
| dc.creator | Ploszajczak, Marek | |
| dc.creator | Gonzalez, Jorge A. | |
| dc.date | 2001-06-22 | |
| dc.date | 2001-10-19 | |
| dc.date.accessioned | 2026-07-07T12:16:34Z | |
| dc.date.available | 2026-07-07T12:16:34Z | |
| dc.description | The spherical spin model with infinite-range ferromagnetic interactions is investigated analytically in the framework of non-extensive thermostatics generalizing the Boltzmann-Gibbs statistical mechanics. We show that for repulsive correlations, a new weak-ferromagnetic phase develops. There is a tricritical point separating para, weak-ferro and ferro regimes. The transition from paramagnetic to weak-ferromagnetic phase is an unusual first order phase transition in which a discontinuity of the averaged order parameter appears, even for finite number of spins. This result puts in a new way the question of the stability of critical phenomena with respect to the long-ranged correlations. | |
| dc.description | 4 pages, 3 figures, in the final form as in the journal | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0106460 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0106460 | |
| dc.identifier | Phys.Rev.E65:015103,2002 | |
| dc.identifier | doi:10.1103/PhysRevE.65.015103 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/211845 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Nuclear Theory | |
| dc.title | Phase Transitions in Non-extensive Spin Systems | |
| dc.type | text |