Fulop-Tsutsui interactions on quantum graphs
Cheon, Taksu · Turek, Ondrej
Original · EN
We examine scale invariant Fulop-Tsutsui couplings in a quantum vertex of a general degree n. We demonstrate that essentially same scattering amplitudes as for the free coupling can be achieved for two (n-1)-parameter Fulop-Tsutsui subfamilies if n is odd, and for three (n-1)-parameter Fulop-Tsutsui subfamilies if n is even. We also work up an approximation scheme for a general Fulop-Tsutsui vertex, using only n δ function potentials.
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