Joint ICTP/SISSA Statistical Physics seminar: "Finite volume matrix elements in the sine-Gordon model"
Starts 26 Feb 2013 11:00
Ends 26 Feb 2013 20:00
Central European Time
SISSA, Santorio Building, Room 128 (1st Floor)
I will discuss finite volume matrix elements of local operators in integrable quantum field theories and present a conjecture relating finite and infinite volume form factors in the most general setting, i.e. including the case of form factors containing disconnected pieces in the presence of non-diagonal scattering. Specializing to the sine-Gordon model, finite volume multi-soliton form factors are compared to numerical data coming from a numerical renormalization group calculation in the truncated conformal space. I find excellent agreement between the two approaches, thus verifying both bootstrap for multi-soliton form factors and the theory linking finite and infinite volume matrix elements. Evaluation of the nontrivial multi-soliton form factors is achieved by a newly developed regularization scheme.