Universal Ratios of the Renormalization Group: The Tricritical
Ising Model in Two Dimensions.
Davide Fioravanti
Abstract
We consider the universality class of the two--dimensional
Tricritical Ising Model spanned by four relevant fields.
The scaling form of the free--energy naturally leads to
the definition of a set of non-universal amplitudes and a set of
universal combinations thereof (the Universal Ratios). We compute
these universal ratios by combined use of results coming from
Perturbed Conformal Field Theory, Scattering Integrable Quantum
Field Theory and numerical methods.
Elenco dei partecipanti al convegno di Bari.