A lattice model for the second $\mathbb{Z}_{3}$ parafermionic field theory

Details A lattice model for the second $\mathbb{Z}_{3}$ parafermionic field theory A lattice model for the second $\mathbb{Z}_{3}$ parafermionic field theory

2008-12-18

arxiv.org/abs/0812.3473v1

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

The second $\mathbb{Z}_{3}$ parafermionic conformal theories are associated with the coset construction $\frac{SU(2)_{k}\times SU(2)_{4}}{SU(2)_{k+4}} $. Solid-on-solid integrable lattice models obtained by fusion of the model based on level-1 representation of the affine algebra $B_1^{(1)}$ have a critical point described by these conformal theories. Explicit values for the Boltzmann weights are derived for these models, and it is shown that the Boltzmann weights can be made positive for a particular value of the spectral parameter, opening a way to eventual numerical simulations of these conformal field theories. Away from criticality, these lattice models describe an integrable, massive perturbation of the parafermionic conformal theory by the relevant field $\Psi_{-2/3}^{\dagger}D_{1,3} $.

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