Generating function for sine-Gordon correlators in finite volume from the inhomogeneous XXZ chain
arXiv:1206.1528
Abstract
We present an expression for the generating function of correlation functions of the sine-Gordon integrable field theory on a cylinder, with compact space. This is derived from the Destri-De Vega integrable lattice regularization of the theory, formulated as an inhomogeneous Heisenberg XXZ spin chain, and from more recent advances in the computations of spin form factors in the thermodynamic limit.
arXiv comment28 pages, 1 figure. v2: notation in the result simplified and commented, expression for G_omega corrected, conventions clarified, overall normalization written, references reordered and other modifications in the text