The Range of Localization Operators and Lifting Theorems for Modulation and Bargmann-Fock Spaces

Details The Range of Localization Operators and Lifting Theorems for Modulation and Bargmann-Fock Spaces The Range of Localization Operators and Lifting Theorems for Modulation and Bargmann-Fock Spaces

2010-10-04

arxiv.org/abs/1010.0513v1

Mathematics

Functional Analysis

23 pages

Scientific paper

We study the range of time-frequency localization operators acting on modulation spaces and prove a lifting theorem. As an application we also characterize the range of Gabor multipliers, and, in the realm of complex analysis, we characterize the range of certain Toeplitz operators on weighted Bargmann-Fock spaces. The main tools are the construction of canonical isomorphisms between modulation spaces of Hilbert-type and a refined version of the spectral invariance of pseudodifferential operators. On the technical level we prove a new class of inequalities for weighted gamma functions.

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