Gruppo di Fisica Statistica

Gruppo 106, Institut Jean Lamour

                     
Home
Dove
Personale
Pubblicazioni
Articoli in riviste
Lettere
Proceeding di conferenze per invito
Proceeding di conferenze
Non pubblicato
Ph.D
Habilitation à diriger des recherches
Epistemologia e storia della scienza
Articoli pedagogici
Libri
Editori
Capitoli di libri
Divulgazione
Seminari
Workshops
Rencontres
Scuole
Internazionale
Gruppo di Lavoro
Posizioni
Insegnamento

Articoli in riviste

Monte Carlo study of phase transitions in the bond-diluted 3D 4-state Potts model
Chatelain C., Berche B., Janke W., Berche P.-E.
Nuclear Physics B 719 (2005) 275
DOI : 10.1016/j.nuclphysb.2005.05.003
ArXiv : cond-mat/0501115 [PDF]
HAL : hal-00003802

Large-scale Monte Carlo simulations of the bond-diluted three-dimensional 4-state Potts model are performed. The phase diagram and the physical properties at the phase transitions are studied using finite-size scaling techniques. Evidences are given for the existence of a tricritical point dividing the phase diagram into a regime where the transitions remain of first order and a second regime where the transitions are softened to continuous ones by the influence of disorder. In the former regime, the nature of the transition is essentially clarified through an analysis of the energy probability distribution. In the latter regime critical exponents are estimated. Rare and typical events are identified and their role is qualitatively discussed in both regimes.



Inizio pagina