Exact expectation values of local fields in quantum sine-Gordon model

Details Exact expectation values of local fields in quantum sine-Gordon model Exact expectation values of local fields in quantum sine-Gordon model

1996-11-29

arxiv.org/abs/hep-th/9611238v1

Nucl.Phys. B493 (1997) 571-587

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, harvmac.tex, 2 figures

Scientific paper

10.1016/S0550-3213(97)00123-5

We propose an explicit expression for vacuum expectation values of the exponential fields in the sine-Gordon model. Our expression agrees both with semi-classical results in the sine-Gordon theory and with perturbative calculations in the Massive Thirring model. We use this expression to make new predictions about the large-distance asymptotic form of the two-point correlation function in the XXZ spin chain.

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