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Quantum graphs as holonomic constraints

Gianfausto Dell'Antonio·Lucattilio Tenuta
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Abstract

We consider the dynamics on a quantum graph as the limit of the dynamics generated by a one-particle Hamiltonian in R^2 with a potential having a deep strict minimum on the graph, when the width of the well shrinks to zero. For a generic graph we prove convergence outside the vertices to the free dynamics on the edges. For a simple model of a graph with two edges and one vertex, we prove convergence of the dynamics to the one generated by the Laplacian with Dirichlet boundary conditions in the vertex.

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Gianfausto Dell'Antonio, Lucattilio Tenuta. 2006-03-17. Quantum graphs as holonomic constraints. https://doi.org/10.1063/1.2213789

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