A remarkable spectral feature of the Schrödinger Hamiltonian of the harmonic oscillator perturbed by an attractive δ′-interaction centred at the origin: double degeneracy and level crossing

DOI10.1088/1751-8113/46/38/385305zbMath1280.81051OpenAlexW2172121414MaRDI QIDQ2855999

Fabio Rinaldi, Silvestro Fassari, Sergio A. Albeverio

Publication date: 23 October 2013

Published in: Journal of Physics A: Mathematical and Theoretical (Search for Journal in Brave)

Full work available at URL: http://infoscience.epfl.ch/record/188442

Mathematics Subject Classification ID

Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics (81Q05) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Perturbation theories for operators and differential equations in quantum theory (81Q15)

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