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math.SP2022★ 1 cited
On Schrödinger operators with -potentials supported on star graphs
Konstantin Pankrashkin, Marco Vogel
The spectral properties of two-dimensional Schrödinger operators with -potentials supported on star graphs are discussed. We describe the essential spectrum and give a complete…
math.SP2022★ 3 cited
Asymptotics of Robin eigenvalues on sharp infinite cones
Konstantin Pankrashkin, Marco Vogel
Let be a bounded domain with Lipschitz boundary. For and consider the infinite cone $Ω_{\varepsilon}:=\big\{(x_1,x')\in (0,\…