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Maths HEP Lunchtime Seminars: Scaling q-state Potts model
Presented by Máté Lencsés, Eötvös Univ
3 July 2015 13:00 in CM221The q-state Potts model is the generalization of the Ising model with q different values of the site variables. It has a critical point (critical temperature T_c, zero magnetic field), and we study the scaling field theory as a perturbation of the conformal field theory describing the critical point. Introducing the thermal perturbation preserves integrability and the spectrum is known due to S-matrix bootstrap and consists of particle excitations above the unique ground state for T>T_c and kinks interpolating between the q degenerate ground states for T