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Quantized Algebras of Functions on Homogeneous Spaces with Poisson Stabilizers

Neshveyev, Sergey; Tuset, Lars
Journal article, Peer reviewed
Postprint title varies from published title. the original publication is available at www.springerlink.com
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URI
https://hdl.handle.net/10642/1381
Date
2012-03-01
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Original version
Neshveyev, S. & Tuset, L. (2012). Quantized Algebras of Functions on Homogeneous Spaces with Poisson Stabilizers. Communications in Mathematical Physics 312(1)   http://dx.doi.org/10.1007/s00220-012-1455-6
Abstract
Let G be a simply connected semisimple compact Lie group with standard Poisson structure, K a closed Poisson-Lie subgroup, 0 < q < 1. We study a quantization C(G q /K q ) of the algebra of continuous functions on G/K. Using results of Soibelman and Dijkhuizen-Stokman we classify the irreducible representations of C(G q /K q ) and obtain a composition series for C(G q /K q ). We describe closures of the symplectic leaves of G/K refining the well-known description in the case of flag manifolds in terms of the Bruhat order. We then show that the same rules describe the topology on the spectrum of C(G q /K q ). Next we show that the family of C*-algebras C(G q /K q ), 0 < q ≤ 1, has a canonical structure of a continuous field of C*-algebras and provides a strict deformation quantization of the Poisson algebra . Finally, extending a result of Nagy, we show that C(G q /K q ) is canonically KK-equivalent to C(G/K).
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Springer

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