David Dei Cont, Bernard Nienhuis
Published 2004-12-01Version 1
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.
Comments: 30 pages, 5 figures
Landau like theory for universality of critical exponents in quasistatioary states of isolated mean-field systems
Critical Exponents of Superfluid Helium and Pseudo-$ε$ Expansion
Bethe ansatz solution of zero-range process with nonuniform stationary state
