Duality and Thermal Deformation in the Tricritical Ising Model

by Giuseppe Mussardo (SISSA)

Aula Magna

Aula Magna


The thermal deformation of the 2D Tricritical Ising Model gives rise to an exact scattering theory with seven massive excitations based on the exceptional $E_7$ Lie algebra. The high and low temperature phases of this model are related by duality. We will discuss the peculiar features of the self-duality of this model and the possibility to compute exactly the matrix elements (Form Factors) of local and non-local magnetization operators.  We employ these Form Factors to compute the exact dynamical structure factors of the theory, a set of quantities with a rich spectroscopy which may be directly tested in future inelastic neutron or Raman scattering experiments.