Integrable boundary conditions for classical sine-Gordon theory

Details Integrable boundary conditions for classical sine-Gordon theory Integrable boundary conditions for classical sine-Gordon theory

1994-10-05

arxiv.org/abs/hep-th/9410026v1

J.Phys. A28 (1995) 1089-1100

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, DTP/94-39

Scientific paper

10.1088/0305-4470/28/4/029

The possible boundary conditions consistent with the integrability of the classical sine-Gordon equation are studied. A boundary value problem on the half-line $x\leq 0$ with local boundary condition at the origin is considered. The most general form of this boundary condition is found such that the problem be integrable. For the resulting system an infinite number of involutive integrals of motion exist. These integrals are calculated and one is identified as the Hamiltonian. The results found agree with some recent work of Ghoshal and Zamolodchikov.

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