By. Hou et al., BOSONIC REALIZATION FOR BOUNDARY STATES IN QUANTUM SINE-GORDON FIELD WITH BOUNDARY, Communications in Theoretical Physics, 29(4), 1998, pp. 579-586
Boundary operators and boundary ground states in sine-Gordon model wit
h a fixed boundary condition are studied using bosonization and q-defo
rmed oscillators. We also study the boundary bound state for this case
.