Critical exponents for the FPL^2 model

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Starting from the Bethe ansatz solution we derive a set of coupled non-linear integral equations for the fully packed double loop model (FPL^2) on the square lattice. As an application we find exact expressions for the central charge and for the scaling dimension corresponding to the simplest charge excitation. We study numerically the low-lying excitations corresponding to more general perturbations of the ground state and discover that the corresponding scaling dimensions are well described by the Cartan matrix of sl_4.
30 pages, 5 figures

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/25394

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0412018
 http://arxiv.org/abs/cond-mat/0412018

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arXiv