| An approximation to $\delta'$ couplings on graphs (2004) | |||||||||
Abstract | |||||||||
| 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.. Comment: 10 pages, LaTeX, 1 figure added, to be published in J. of Phys. A | |||||||||
Publication details | |||||||||
| |||||||||