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Journal of Mathematical Physics
Article . 2023 . Peer-reviewed
License: CC BY
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zbMATH Open
Article . 2023
Data sources: zbMATH Open
https://dx.doi.org/10.48550/ar...
Article . 2023
License: CC BY NC ND
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Superoscillations and Fock spaces

Authors: Daniel Alpay; Fabrizio Colombo; Kamal Diki; Irene Sabadini; Daniele C. Struppa;

Superoscillations and Fock spaces

Abstract

In this paper we use techniques in Fock spaces theory and compute how the Segal-Bargmann transform acts on special wave functions obtained by multiplying superoscillating sequences with normalized Hermite functions. It turns out that these special wave functions can be constructed also by computing the approximating sequence of the normalized Hermite functions. First, we start by treating the case when a superoscillating sequence is multiplied by the Gaussian function. Then, we extend these calculations to the case of normalized Hermite functions leading to interesting relations with Weyl operators. In particular, we show that the Segal-Bargmann transform maps superoscillating sequences onto a superposition of coherent states. Following this approach, the computations lead to a specific linear combination of the normalized reproducing kernels (coherent states) of the Fock space. As a consequence, we obtain two new integral Bargmann-type representations of superoscillating sequences. We also investigate some results relating superoscillation functions with Weyl operators and Fourier transform.

Countries
United States, Italy
Related Organizations
Keywords

normalized Fock kernels, Bergman spaces and Fock spaces, Superoscillations, FOS: Physical sciences, approximating sequence, Nontrigonometric harmonic analysis involving wavelets and other special systems, Mathematical Physics (math-ph), coherent states, Segal-Bargmann transform, Fock space, Weyl operator, Functions of hypercomplex variables and generalized variables, Other Physics, Coherent states, Special integral transforms (Legendre, Hilbert, etc.), Other Mathematics, Mathematical Physics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Top 10%
Average
Top 10%
Green
hybrid