Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-03-08
Phys.Lett. B328 (1994) 123-129
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, LATEX file, ISAS/EP/94/30 (Figures added, originally missed for E-mail transmission problem.)
Scientific paper
10.1016/0370-2693(94)90439-1
The factorization condition for the scattering amplitudes of an integrable model with a line of defect gives rise to a set of Reflection-Transmission equations. The solutions of these equations in the case of diagonal $S$-matrix in the bulk are only those with $S =\pm 1$. The choice $S=-1$ corresponds to the Ising model. We compute the transmission and reflection amplitudes relative to the interaction of the Majorana fermion with the defect and we discuss their relevant features.
Delfino Gesualdo
Mussardo Giuseppe
Simonetti Prospero
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