Linear perturbations of the Wigner transform and the Weyl quantization
Functional Analysis
2020-04-06 v1
Abstract
We study a class of quadratic time-frequency representations that, roughly speaking, are obtained by linear perturbations of the Wigner transform. They satisfy Moyal's formula by default and share many other properties with the Wigner transform, but in general they do not belong to Cohen's class. We provide a characterization of the intersection of the two classes. To any such time-frequency representation, we associate a pseudodifferential calculus. We investigate the related quantization procedure, study the properties of the pseudodifferential operators, and compare the formalism with that of the Weyl calculus.
Cite
@article{arxiv.1906.02503,
title = {Linear perturbations of the Wigner transform and the Weyl quantization},
author = {Dominik Bayer and Elena Cordero and Karlheinz Gröchenig and S. Ivan Trapasso},
journal= {arXiv preprint arXiv:1906.02503},
year = {2020}
}
Comments
38 pages. Contributed chapter for volume on the occasion of Luigi Rodino's 70th birthday