理論セミナー

日時: 2014-04-30 15:00 - 16:00
場所: 研究本館3階セミナールーム322室
会議名: Quantum graph vertices with minimal number of passbands
連絡先: 森田 辰弥、moritata-AT-post.kek.jp
講演者: Dr. Poghosyan Sergey  (高知工科大学)
講演言語: 英語
アブストラクト: We study a set of scattering matrices of quantum graphs containing minimal number of pass- bands, i.e., maximal number of zero elements. The cases of even and odd vertex degree are considered. Using a solution of inverse scattering problem, we reconstruct boundary conditions of scale-invariant vertex couplings. Potential-controlled universal flat filtering properties are found for considered types of vertex couplings. Obtained boundary conditions are approximated by simple graphs carrying only N4 potentials and inner magnetic field.

[index]