We study the scaling region spanned by all four relevant perturbations of the tricritical Ising model in two dimensions. We analyze the spectrum of the (1 + 1)-dimensional off-critical hamiltonian on a truncated Hilbert space, a method recently proposed by Yurov and Al. Zamolodchikov. In the phase coexistence regions the massive excitations are kink states. On the temperature-driven two-phase coexistence line, they form bound states, which we analyze for periodic as well as for twisted boundary conditions. We find a new asymmetric two-phase region driven by the subleading magnetic field. There are some indications of massless states along the crossover line to the Ising model. The effects of off-critical integrability on the spectra are also observed and discussed.

THE SCALING REGION OF THE TRICRITICAL ISING-MODEL IN 2 DIMENSIONS

Mussardo, Giuseppe;
1991-01-01

Abstract

We study the scaling region spanned by all four relevant perturbations of the tricritical Ising model in two dimensions. We analyze the spectrum of the (1 + 1)-dimensional off-critical hamiltonian on a truncated Hilbert space, a method recently proposed by Yurov and Al. Zamolodchikov. In the phase coexistence regions the massive excitations are kink states. On the temperature-driven two-phase coexistence line, they form bound states, which we analyze for periodic as well as for twisted boundary conditions. We find a new asymmetric two-phase region driven by the subleading magnetic field. There are some indications of massless states along the crossover line to the Ising model. The effects of off-critical integrability on the spectra are also observed and discussed.
1991
348
3
591
618
Lassig, M; Mussardo, Giuseppe; Cardy, Jl
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/11496
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