An approximation to $δ'$ couplings on graphs

Details An approximation to $δ'$ couplings on graphs An approximation to $δ'$ couplings on graphs

2004-04-23

arxiv.org/abs/quant-ph/0404136v2

Journal of Physics A37 (2004) L329-L335.

Physics

Quantum Physics

10 pages, LaTeX, 1 figure added, to be published in J. of Phys. A

Scientific paper

10.1088/0305-4470/37/29/L01

We discuss a general parametrization for vertices of quantum graphs and show,
in particular, how the $\delta'_s$ and $\delta'$ coupling at an $n$ edge vertex
can be approximated by means of $n+1$ couplings of the $\delta$ type provided
the latter are properly scaled.

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