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• W2107179763 abstract "Gabor frames can advantageously be redefined using the Heisenberg–Weyl operators familiar from harmonic analysis and quantum mechanics. Not only does this redefinition allow us to recover in a very simple way known results of symplectic covariance, but it immediately leads to the consideration of a general deformation scheme by Hamiltonian isotopies (i.e. arbitrary paths of non-linear symplectic mappings passing through the identity). We will study in some detail an associated weak notion of Hamiltonian deformation of Gabor frames, using ideas from semiclassical physics involving coherent states and Gaussian approximations. We will thereafter discuss possible applications and extensions of our method, which can be viewed – as the title suggests – as the very first steps towards a general deformation theory for Gabor frames." @default.
• W2107179763 created "2016-06-24" @default.
• W2107179763 creator A5050598781 @default.
• W2107179763 date "2015-03-01" @default.
• W2107179763 modified "2023-10-16" @default.
• W2107179763 title "Hamiltonian deformations of Gabor frames: First steps" @default.
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• W2107179763 doi "https://doi.org/10.1016/j.acha.2014.03.010" @default.
• W2107179763 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4394155" @default.
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