Limiting absorption principle for contractions

We establish limiting absorption principles for contractions on a Hilbert space. Our sufficient conditions are based on positive commutator estimates. We discuss the dynamical implications of this principle to the corresponding discrete-time semigroup and provide several applications. Notably to Toe...

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Hauptverfasser: Asch, Joachim, Bourget, Olivier
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Sprache:eng
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Zusammenfassung:We establish limiting absorption principles for contractions on a Hilbert space. Our sufficient conditions are based on positive commutator estimates. We discuss the dynamical implications of this principle to the corresponding discrete-time semigroup and provide several applications. Notably to Toeplitz operators and contractive quantum walks.
DOI:10.48550/arxiv.2405.11664