A partial inner product space of analytic functions for resonances

L. P. Horwitz, E. Katznelson

Research output: Contribution to journalArticlepeer-review

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Generalized Hilbert spaces D (α,β) are defined using analytic continuation of Hardy class functions into a wedge bounded by the angles α,β. Eigenfunctions of isolated complex eigenvalues may be found in D (α,β) for operators that have a self-adjoint representation in L2. These eigenvalues correspond to resonances in the associated decay problem. A bilinear form between D (α,β) and D (-β,-α) is defined, which has some of the properties of a Hilbert space scalar product, and it is shown that this form can be used to define a variational principle to obtain the eigenvalue equations.

Original languageEnglish
Pages (from-to)848-859
Number of pages12
JournalJournal of Mathematical Physics
Issue number4
StatePublished - 1982
Externally publishedYes


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