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arXiv 1107.4680math.FAmath.CV
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多解析Fock空间上的局部化与Toeplitz算子

Localization and Toeplitz Operators on Polyanalytic Fock Spaces

Nelson Faustino

摘要:

The well know conjecture of { \it Coburn} [{ \it L.A. Coburn, {On the Berezin-Toeplitz calculus}, Proc. Amer. Math. Soc. 129 (2001) 3331-3338.}] proved by { \it Lo} [{ \it M-L. Lo, {The Bargmann Transform and Windowed Fourier Transform }, Integr. equ. oper. theory, 27 (2007), 397-412.}] and { \it Englis} [{ \it M. Engli $\check{s}$ , Toeplitz Operators and Localization Operators, Trans. Am. Math Society 361 (2009) 1039-1052.}] states that any { \it Gabor-Daubechies} operator with window $ψ$ and symbol ${\bf a}(x,ω)$ quantized on the phase space by a { \it Berezin-Toeplitz} operator with window $Ψ$ and symbol $σ(z,\bar{z})$ coincides with a { \it Toeplitz} operator with symbol $Dσ(z,\bar{z})$ for some polynomial differential operator $D$ . Using the Berezin quantization approach, we will extend the proof for polyanalytic Fock spaces. While the generation is almost mimetic for two-windowed localization operators, the Gabor analysis framework for vector-valued windows will provide a meaningful generalization of this conjecture for { \it true polyanalytic} Fock spaces and moreover for polyanalytic Fock spaces. Further extensions of this conjecture to certain classes of Gel'fand-Shilov spaces will also be considered { \it a-posteriori}.

英文摘要:

The well know conjecture of {\it Coburn} [{\it L.A. Coburn, {On the Berezin-Toeplitz calculus}, Proc. Amer. Math. Soc. 129 (2001) 3331-3338.}] proved by {\it Lo} [{\it M-L. Lo, {The Bargmann Transform and Windowed Fourier Transform}, Integr. equ. oper. theory, 27 (2007), 397-412.}] and {\it Englis} [{\it M. Engli$\check{s}$, Toeplitz Operators and Localization Operators, Trans. Am. Math Society 361 (2009) 1039-1052.}] states that any {\it Gabor-Daubechies} operator with window $ψ$ and symbol ${\bf a}(x,ω)$ quantized on the phase space by a {\it Berezin-Toeplitz} operator with window $Ψ$ and symbol $σ(z,\bar{z})$ coincides with a {\it Toeplitz} operator with symbol $Dσ(z,\bar{z})$ for some polynomial differential operator $D$. Using the Berezin quantization approach, we will extend the proof for polyanalytic Fock spaces. While the generation is almost mimetic for two-windowed localization operators, the Gabor analysis framework for vector-valued windows will provide a meaningful generalization of this conjecture for {\it true polyanalytic} Fock spaces and moreover for polyanalytic Fock spaces. Further extensions of this conjecture to certain classes of Gel'fand-Shilov spaces will also be considered {\it a-posteriori}.

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