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Questions on various methods and aspects of quantization

6 votes
Accepted

Kontsevich weights in the complex algebraic setting

yes, the formula for the weights is the same in whatever setting (differentiable, holomorphic and algebro-geometric). weights are involved in a local formula for a start-product. Indeed, $B_\Gamma$ …
DamienC's user avatar
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3 votes

Is the quantum algebra unique (up to isomorphism) in deformation quantization ?

Point 4. concerning the symplectic case, the main reason why the classification map doesn't depend on any choice is because the quantization is unique. …
DamienC's user avatar
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5 votes

Kontsevich's formality theorem from an explicit homotopy

The only way I know to construct a formality quasi-morphism for poy-vector fields out of an homotopy is via Tamarkins approach (i.e. $G_\infty$-formality). What Tamrakin does is prove that there is …
DamienC's user avatar
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2 votes
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Kontsevich Formality sign convention

Welcome to mathoverflow! There is actually a whole paper (in French) about choices of signs for Kontsevich formality: https://arxiv.org/pdf/math/0003003.pdf For instance, they define the Hochschild …
DamienC's user avatar
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9 votes

Lagrangian Submanifolds in Deformation Quantization

One has to choose an identification of a tubular neighborhood $U$ of $L$ in $M$ with a tubular neighborhood $V$ of the zero section of the normal bundle $NL$. Once one has done this, it means that w …
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7 votes
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Fedosov vs. Kontsevich deformation quantization : a beginner survey

As it is explained in the comment by Bertram Arnold, Fedosov's quantization works for symplectic manifolds only (and can actually be generalized to regular Poisson manifolds) while Kontsevich's quantization … In the symplectic case, the local deformation quantization is known to exist, and is essentially unique (it's the Moyal-Weyl star-product). …
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3 votes
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What is the definition of "the $L_\infty$ part of a $G_\infty$ morphism"?

A $G_\infty$-morphism $\phi$ is determined by structure maps $\phi^{k_1,\dots,k_n}$, $n\geq1$, $k_1,\dots,k_n\geq1$. The $L_\infty$-part of $\phi$ is the $L_\infty$-morphism $\ell$ with structure ma …
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8 votes
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Does the vanishing of the Poisson bracket on $S(\mathfrak{g})^{\mathfrak{g}}$ inspire the di...

Let $A_0$ be a Poisson algebra and $A$ a deformation quantization of $A_0$ (assume we are in a context when it exists). … Assume you have a quantization map $Q:A_0\to A$, by which I mean a section of the classical limit map $A\to A/(\hbar)=A_0$. …
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5 votes

Quantization of conjugacy classes in a Lie group

Joseph Donin and Andrei Mudrov have worked a lot on this question... the quantization of conjugacy classes seems to be related to dynamical r-matrices and and the so-called reflection equation. …
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