Bulg. J. Phys. vol.44 no.1 (2017), pp. 057-067

On the RG Flow in the Two-Dimensional Coset Models

M. Stanishkov
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
Abstract. We consider a RG flow in a general ̂su(2) coset model perturbed by the least relevant field. The perturbing field as well as some particular fields of dimension close to one are constructed recursively in terms of lower level fields. Using this construction we obtain the structure constants and the four-point correlation functions in the leading order. This allows us to compute the mixing coefficients among the fields in the UV and the IR theory.

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