One-dimensional transfer matrix from scattering amplitudes

If the left and right travelling-wave coefficients are related by

B_{L} = r A_{L} + t B_{R}, A_{R} = t A_{L} + r B_{R},

then

(A_{R} B_{R}) = \frac{1}{t} (t^{2} - r^{2} - r r 1) (A_{L} B_{L}) .

 Ancestors (6)