paper

Expectation values of boundary fields in the boundary sine-Gordon model

arXiv:hep-th/9702190 · doi:10.1016/S0370-2693(97)00616-3

Abstract

We propose an explicit expression for vacuum expectation values of the boundary field e^{iaϕ_{B}} 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.

7 pages, harvmac.tex

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