Eur. Phys. J. B 50, 541-548 (2006)
https://doi.org/10.1140/epjb/e2006-00172-3

Monte Carlo study of 2D generalized XY-models

¹ Departamento de Física, Universidade Federal de Minas Gerais, Caixa Postal 702, 30123-970 Minas Gerais, Brazil
² Departamento de Física, Universidade Federal de Viçosa, Viçosa, 36570-000 Minas Gerais, Brazil
³ Istituto Nazionale per la Fisica della Materia e Dipartimento di Fisica “A. Volta”, Universitá di Pavia, via A. Bassi 6, 27100 Pavia, Italy

Corresponding author: ^a apereira@ufv.br

Received: 7 July 2005
Revised: 20 January 2006
Published online: 17 May 2006

Abstract

In this paper we study a recent generalization of the XY-model in two dimensions by using Monte Carlo method. The vortex density, specific heat, energy and critical temperature are obtained. Some results are compared with approximated analytical calculations. The nature of the phase transition as the generalization parameter varies is discussed.