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Exact (d)->(+)&(-) boundary flow in the tricritical Ising model

Giovanni Feverati
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Abstract

The integrable perturbation of the degenerate boundary condition (d) by the $ϕ_{1,3}$ boundary field generates a renormalization group flow down to the superposition of Cardy boundary states (+)&(-). Exact Thermodynamic Bethe Ansatz (TBA) equations for all the excited states are derived here extending the results of a previous paper to this case. As an intermediate step, the non-Cardy boundary conformal sector (+)&(-) is also described as the scaling limit of an A_4 lattice model with appropriate integrable boundary conditions and produces the first example of superposition of finitized Virasoro characters.

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Giovanni Feverati. 2004-02-09. Exact (d)->(+)&(-) boundary flow in the tricritical Ising model. https://doi.org/10.1088/1742-5468%2F2004%2F03%2Fp001

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