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Berezin-Toeplitz quantization asssociated with higher Landau levels of the Bochner Laplacian (2012.14198v1)

Published 28 Dec 2020 in math.DG, math-ph, math.MP, and math.SP

Abstract: In this paper, we construct a family of Berezin-Toeplitz type quantizations of a compact symplectic manifold. For this, we choose a Riemannian metric on the manifold such that the associated Bochner Laplacian has the same local model at each point (this is slightly more general than in almost-K\"ahler quantization). Then the spectrum of the Bochner Laplacian on high tensor powers $Lp$ of the prequantum line bundle $L$ asymptotically splits into clusters of size ${\mathcal O}(p{3/4})$ around the points $p\Lambda$, where $\Lambda$ is an eigenvalue of the model operator (which can be naturally called a Landau level). We develop the Toeplitz operator calculus with the quantum space, which is the eigenspace of the Bochner Laplacian corresponding to the eigebvalues frrom the cluster. We show that it provides a Berezin-Toeplitz quantization. If the cluster corresponds to a Landau level of multiplicity one, we obtain an algebra of Toeplitz operators and a formal star-product. For the lowest Landau level, it recovers the almost K\"ahler quantization.

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