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Gianluca Giacchi

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Preprint Aug 2026

A Schr\"odinger characterization of the oscillator semigroup

The oscillator (or metaplectic) semigroup is classically defined as the two-fold cover of the semigroup of positive complex symplectic matrices. Although geometrically precise, this definition does not provide an intrinsic operator-theoretic characterization of the bounded operators corresponding to positive symplectic...

Gianluca Giacchi · 0 citations

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