249 citations · 4.3k across the 104 of their papers we have counts for
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hep-th2003★ 43 cited
On the mass spectrum of the two-dimensional O(3) sigma model with theta term
D. Controzzi, G. Mussardo
Form Factor Perturbation Theory is applied to study the spectrum of the O(3) non--linear sigma model with the topological term in the vicinity of . Its effective action near…
hep-th2003★ 31 cited
Finite-Volume Form Factors in Semiclassical Approximation
G. Mussardo, V. Riva, G. Sotkov
A semiclassical approach is used to obtain Lorentz covariant expressions for the form factors between the kink states of a quantum field theory with degenerate vacua. Implemented o…
hep-th2003★ 1 cited
Universal Ratios and Correlation Functions
G. Delfino, G. Mussardo
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…