Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-25T13:02:05.931Z Has data issue: false hasContentIssue false

Scattering Length and the Spectrum of –Δ + V

Published online by Cambridge University Press:  20 November 2018

Michael Taylor*
Affiliation:
Mathematics Department, University of North Carolina, Chapel Hill, NC 27599, U.S.A. e-mail: met@math.unc.edu
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Given a non-negative, locally integrable function $V$ on ${{\mathbb{R}}^{n}}$, we give a necessary and sufficient condition that $-\Delta +V$ have purely discrete spectrum, in terms of the scattering length of $V$ restricted to boxes.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2006

References

[F] Friedrichs, K., Spektraltheorie halbbeschränkter Operatoren und Anwendung auf die Spektralzerlegung von Differentialoperatoren. Math. Ann. 109(1934), 465487, 685–713.Google Scholar
[K] Kac, M., Probabilistic methods in some problems of scattering theory. Rocky Mountain J. Math. 4(1974), 511537.Google Scholar
[KL] Kac, M. and Luttinger, J., Scattering length and capacity. Ann. Inst. Fourier 25(1975), no. 3–4, 317321.Google Scholar
[KS] Kondrat’ev, V. and Shubin, M., Discreteness of spectrum for the Schrødinger operators on manifolds with bounded gaometry. Oper. Theory Adv. Appl. 110, Birkhauser, Basel, 1999, pp. 185226.Google Scholar
[MS] Maz’ya, V. and Shubin, M., Discreteness of spectrum and positivity criteria for Schrödinger operators. Ann. Math. 162(2005), 919942.Google Scholar
[Mol] Molchanov, A., On conditions for the discreteness of the spectrum conditions for self-adjoint differential equations of the second order. Proc. Moscow Math. Soc. 2(1953), 169199. (Russian)Google Scholar
[T] Taylor, M., Scattering length and perturbations of Δ by positive potentials. J. Math. Anal. Appl. 53(1976), no. 2, 291312.Google Scholar