The Lippmann-Schwinger formalism can also be applied to a one- dimensional transmission-reflection problem with a finite-range potential,
Question:
The Lippmann-Schwinger formalism can also be applied to a one- dimensional transmission-reflection problem with a finite-range potential, V(x) ? 0 for 0
a. Suppose we have an incident wave coming from the left: = e1kx / ?2?. I-low must we handle the singular 1 / (E ? II0) operator if we are to have a transmitted wave only for x > a and a reflected wave and the original wave for x (+) >.
b. Consider the special case of an attractive ?-function potential
Solve the integral equation to obtain the transmission and reflection amplitudes. Check your results with Gottfried 1966. 52.
c. The one-dimensional 8-function potential with y > 0 admits one (and only one) bound state for any value of ?. Show that the transmission and reflection amplitudes you computed have bound-state poles at the expected positions when k is regarded as a complex variable.
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