Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-06-25
Nucl.Phys.B788:209-251,2008
Physics
High Energy Physics
High Energy Physics - Theory
44 pages, 16 eps figures, LaTeX2e file
Scientific paper
10.1016/j.nuclphysb.2007.07.008
Continuing the investigation started in a previous work, we consider form factors of integrable quantum field theories in finite volume, extending our investigation to matrix elements with disconnected pieces. Numerical verification of our results is provided by truncated conformal space approach. Such matrix elements are important in computing finite temperature correlation functions, and we give a new method for generating a low temperature expansion, which we test for the one-point function up to third order.
Pozsgay Balazs
Taka'cs Ga'bor
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