The Boundary-Integral Formulation and Multiple-Reflection Expansion for the Vacuum Energy of Quantum Graphs
نویسنده
چکیده
Vacuum energy and other spectral functions of Laplace-type differential operators have been studied approximately by classical-path constructions and more fundamentally by boundary integral equations. As the first step in a program of elucidating the connections between these approaches and improving the resulting calculations, I show here how the known solutions for Kirchhoff quantum graphs emerge in a boundary-integral formulation. PACS numbers: 02.60.Lj, 11.10.Kk, 42.25.Gy AMS classification scheme numbers: Primary 34B45; Secondary 34B27, 81Q20 Boundary Integrals and MRE for Graphs 2
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