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Teoreticheskaya i Matematicheskaya Fizika, 2010, Volume 162, Number 3, Pages 397–407
DOI: https://doi.org/10.4213/tmf6477
(Mi tmf6477)
 

This article is cited in 13 scientific papers (total in 13 papers)

Lower bound on the spectrum of the two-dimensional Schrödinger operator with a $\delta$-perturbation on a curve

I. S. Lobanov, V. Yu. Lotoreichik, I. Yu. Popov

St.~Petersburg State University of Information Technologies, Mechanics, and Optics, St.~Petersburg, Russia
References:
Abstract: We consider the two-dimensional Schrödinger operator with a $\delta$-potential supported by curve. For the cases of infinite and closed finite smooth curves, we obtain lower bounds on the spectrum of the considered operator that are expressed explicitly in terms of the interaction strength and a parameter characterizing the curve geometry. We estimate the bottom of the spectrum for a piecewise smooth curve using parameters characterizing the geometry of the separate pieces. As applications of the obtained results, we consider curves with a finite number of cusps and general “leaky” quantum graph as the support of the $\delta$-potential.
Keywords: Schrödinger operator, singular potential, spectral estimate, Birman–Schwinger transformation.
Received: 01.08.2009
English version:
Theoretical and Mathematical Physics, 2010, Volume 162, Issue 3, Pages 332–340
DOI: https://doi.org/10.1007/s11232-010-0025-3
Bibliographic databases:
Language: Russian
Citation: I. S. Lobanov, V. Yu. Lotoreichik, I. Yu. Popov, “Lower bound on the spectrum of the two-dimensional Schrödinger operator with a $\delta$-perturbation on a curve”, TMF, 162:3 (2010), 397–407; Theoret. and Math. Phys., 162:3 (2010), 332–340
Citation in format AMSBIB
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\by I.~S.~Lobanov, V.~Yu.~Lotoreichik, I.~Yu.~Popov
\paper Lower bound on the~spectrum of the~two-dimensional Schr\"odinger operator with a~$\delta$-perturbation on a~curve
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\yr 2010
\vol 162
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\pages 397--407
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  • https://doi.org/10.4213/tmf6477
  • https://www.mathnet.ru/eng/tmf/v162/i3/p397
  • This publication is cited in the following 13 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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