Quantum theta functions and Gabor frames for modulation spaces

Details Quantum theta functions and Gabor frames for modulation spaces Quantum theta functions and Gabor frames for modulation spaces

2008-09-16

arxiv.org/abs/0809.2716v2

Mathematics

Quantum Algebra

38 pages, typos corrected, MSC class changed

Scientific paper

10.1007/s11005-009-0306-7

Representations of the celebrated Heisenberg commutation relations in quantum mechanics and their exponentiated versions form the starting point for a number of basic constructions, both in mathematics and mathematical physics (geometric quantization, quantum tori, classical and quantum theta functions) and signal analysis (Gabor analysis). In this paper we try to bridge the two communities, represented by the two co--authors: that of noncommutative geometry and that of signal analysis. After providing a brief comparative dictionary of the two languages, we will show e.g. that the Janssen representation of Gabor frames with generalized Gaussians as Gabor atoms yields in a natural way quantum theta functions, and that the Rieffel scalar product and associativity relations underlie both the functional equations for quantum thetas and the Fundamental Identity of Gabor analysis.

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