arXiv:hep-th/0302056 · Workshop on Integrable Theories, Solitons and Duality
Universal ratios and correlation functions
Giuseppe Mussardo, Gesualdo Delfino A
Abstract
We review some recent results concerning the quantitative analysis of the universality classes of two-dimensional statistical models near their critical point.We also discuss the exact calculation of the two-point correlation functions of disorder operators in a free theory of complex bosonic and fermionic field, correlators ruled by a Painlevè differential equation.