First order transition in a three dimensional disordered system

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dc.creatorFernandez, L. A.
dc.creatorGordillo-Guerrero, A.
dc.creatorMartin-Mayor, V.
dc.creatorRuiz-Lorenzo, J. J.
dc.date2007-11-06
dc.date.accessioned2026-07-07T09:20:07Z
dc.date.available2026-07-07T09:20:07Z
dc.descriptionWe present the first detailed numerical study in three dimensions of a first-order phase transition that remains first-order in the presence of quenched disorder (specifically, the ferromagnetic/paramagnetic transition of the site-diluted four states Potts model). A tricritical point, which lies surprisingly near to the pure-system limit and is studied by means of Finite-Size Scaling, separates the first-order and second-order parts of the critical line. This investigation has been made possible by a new definition of the disorder average that avoids the diverging-variance probability distributions that plague the standard approach. Entropy, rather than free energy, is the basic object in this approach that exploits a recently introduced microcanonical Monte Carlo method.
dc.description4 pages, 4 color figures
dc.identifierhttps://arxiv.org/abs/0711.0856
dc.identifierhttp://arxiv.org/abs/0711.0856
dc.identifierPhys. Rev. Lett. 100, 057201 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.057201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154623
dc.subjectStatistical Mechanics
dc.subjectDisordered Systems and Neural Networks
dc.titleFirst order transition in a three dimensional disordered system
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