Phase diagram of the ANNNI model in the Hamiltonian limit |
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| Authors: | C. M. Arizmendi A. H. Rizzo L. N. Epele C. A. García Canal |
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| Affiliation: | (1) Facultad de Ingeniería, Universidad Nacional de Mar del Plata, J.B. Justo 4302, 7600 Mar del Plata, Argentina;(2) Laboratorio de Física Teórica, Departamento de Física, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata, Argentina |
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| Abstract: | The Hamiltonian limit of the ANNNI model in (1+1) dimensions is studied by using the Quantum Statistical Monte Carlo method. Even if recent results suggest that Monte Carlo calculations may prove unreliable in the study of this system, the phase diagram of the quantum version of the model was successfully obtained. In particular, the clusive transitions between the disordered, the floating incommensurate and the degenerate  2, 2 are determined by analysing the correlation length behaviour in finite lattices.Partially supported by CONICET Argentina |
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