Quantum Phase Transitions of Quasi-One-Dimensional Heisenberg Antiferromagnets

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We study the ground-state phase transitions of quasi-one-dimensional quantum Heisenberg antiferromagnets by the quantum Monte Carlo method with the continuous-time loop algorithm and finite-size scaling. For a model which consists of S=1 chains with bond alternation coupled on a square lattice, we determine the ground state phase diagram and the universality class of the quantum phase transitions.
5 pages, 3 figures, proceedings for the 16th Annual Workshop "Recent Developments in Computer Simulation Studies in Condensed Matter Physics", Center for Simulational Physics, University of Georgia, USA, 2003

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/227451

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0310619
 http://arxiv.org/abs/cond-mat/0310619
 Computer Simulation Studies in Condensed-Matter Physics XVI, Eds. D. P. Landau, S. P. Lewis, and H.-B. Schuttler, 61 (Springer-Verlag, Berlin, Heidelberg, 2004)

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