کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6416913 1337545 2015 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hamiltonian deformations of Gabor frames: First steps
ترجمه فارسی عنوان
تغییر شکل همیلتون در فریم های گابور: مراحل اول
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات آنالیز ریاضی
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied and Computational Harmonic Analysis - Volume 38, Issue 2, March 2015, Pages 196-221
نویسندگان
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