NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2015, 6 (6), P. 762-766
The Green function for simplest quantum graphs
K. K. Sabirov – Physics Faculty, National University of Uzbekistan, Tashkent, Uzbekistan; karimjonsabirov@yahoo.com
U. A. Aminov – Urganch State University, Urganch, Uzbekistan
Kh. Sh. Saparov – Urganch State University, Urganch, Uzbekistan
M. K. Karimov – Urganch State University, Urganch, Uzbekistan
Kh. Abdikarimov – Urganch State University, Urganch, Uzbekistan
We treat the problem of the Green function for quantum graphs by focusing on such topologies as star and tree graphs. The exact Green function for the Schrödinger equation on primary star graphs is derived in the form of 3 ×3 – matrix using the vertex boundary conditions providing continuity and current conservation. Extension of the approach for the derivation for the Green function on tree graph is presented. Possible practical applications of the obtained results are discussed.
Keywords: quantum graphs, Green function, vertex boundary conditions.
PACS 03.65.Ge, 02.30.Ik
DOI 10.17586/2220-8054-2015-6-6-762-766
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