Extending the use of canonical and microcanonical Monte Carlo algorithms to spin models

Autor(es)

Fiore, Carlos E. ^[1] ; de Oliveira, Mario J. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Parana, Dept Fis, BR-81531000 Curitiba, Parana - Brazil

^[2] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMPUTER PHYSICS COMMUNICATIONS; v. 180, n. 9, p. 1434-1441, SEP 2009.
• Citações Web of Science: 1

Resumo

We describe the canonical and microcanonical Monte Carlo algorithms for different systems that can be described by spin models. Sites of the lattice, chosen at random, interchange their spin values, provided they are different. The canonical ensemble is generated by performing exchanges according to the Metropolis prescription whereas in the microcanonical ensemble, exchanges are performed as long as the total energy remains constant. A systematic finite size analysis of intensive quantities and a comparison with results obtained from distinct ensembles are performed and the quality of results reveal that the present approach may be an useful tool for the study of phase transitions, specially first-order transitions. (C) 2009 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/51286-8 - Sistemas irreversíveis com estados absorventes: um estudo em diferentes abordagens
• Beneficiário: Carlos Eduardo Fiore dos Santos
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado