First-order transitions and triple point on a random p-spin interaction model

Authors
de Araujo, JM da Costa, FA Nobre, FD
Citation
Jm. De Araujo et al., First-order transitions and triple point on a random p-spin interaction model, J PHYS A, 33(10), 2000, pp. 1987-1992
Citations number
22
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
ISSN journal
03054470 → ACNP
Volume
33
Issue
10
Year of publication
2000
Pages
1987 - 1992
Database
ISI
SICI code
0305-4470(20000317)33:10<1987:FTATPO>2.0.ZU;2-O
Abstract
The effects of competing quadrupolar- and spin-glass orderings are investig ated on a spin-1 Ising model with infinite-range random p-spin interactions . The model is studied through the replica approach and a phase diagram is obtained in the limit p --> infinity. The phase diagram, obtained within re plica-symmetry breaking, exhibits a very unusual feature in magnetic models : three first-order transition lines meeting at a common triple point, wher e all phases of the model coexist.