Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-08-25
J.Phys.A32:757-769,1999
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, LaTeX, no figure
Scientific paper
10.1088/0305-4470/32/5/008
We study two-dimensional classically integrable field theory with independent boundary condition on each end, and obtain three possible generating functions for integrals of motion when this model is an ultralocal one. Classically integrable boundary condition can be found in solving boundary $K_{\pm}$ equations. In quantum case, we also find that unitarity condition of quantum $R$- matrix is sufficient to construct commutative quantities with boundary, and its reflection equations are obtained.
Chen Yi-Xin
Luo Xu-Dong
Wu Ke
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