Expectation values of boundary fields in the boundary sine-Gordon model
V. Fateev, S. Lukyanov, A. Zamolodchikov, Al. Zamolodchikov
Abstract
We propose an explicit expression for vacuum expectation values of the boundary field eiaϕB in the boundary sine-Gordon model with zero bulk mass. This expression agrees with known exact results for the boundary free energy and with perturbative calculations.
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