On the Fermi Golde Rule: degenerate eigenvalues

Arne Jensen, Gheorghe Nenciu

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Abstract

We review and further develop the framework in [10] of the stationary theory of resonances, arising by perturbation of either threshold, or embedded in the continuum, eigenvalues. While in [10] only non-degenerate eigenvalues were considered, here we add some results for the degenerate case.
Original languageEnglish
PublisherDepartment of Mathematical Sciences, Aalborg University
Publication statusPublished - 2006
SeriesResearch Report Series
NumberR-2006-17
ISSN1399-2503

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