Spectral and scattering theory of fourth order differential operators

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dc.creatorYafaev, D. R.
dc.date2008-02-03
dc.date.accessioned2026-07-07T09:18:29Z
dc.date.available2026-07-07T09:18:29Z
dc.descriptionAn ordinary differential operator of the fourth order with coefficients converging at infinity sufficiently rapidly to constant limits is considered. Scattering theory for this operator is developed in terms of special solutions of the corresponding differential equation. In contrast to equations of second order "scattering" solutions contain exponentially decaying terms. A relation between the scattering matrix and a matrix of coefficients at exponentially decaying modes is found. In the second part of the paper the operator $D^4$ on the half-axis with different boundary conditions at the point zero is studied. Explicit formulas for basic objects of the scattering theory are found. In particular, a classification of different types of zero-energy resonances is given.
dc.identifierhttps://arxiv.org/abs/0802.0297
dc.identifierhttp://arxiv.org/abs/0802.0297
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154042
dc.subjectSpectral Theory
dc.subjectMathematical Physics
dc.subject34B25; 35P25; 47A40
dc.titleSpectral and scattering theory of fourth order differential operators
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