Quantization of Double Covers of Nilpotent Coadjoint Orbits I: Noncommutative Models
| dc.creator | Brylinski, Ranee | |
| dc.date | 2000-02-15 | |
| dc.date.accessioned | 2026-07-07T04:33:52Z | |
| dc.date.available | 2026-07-07T04:33:52Z | |
| dc.description | We construct by geometric methods a noncommutative model E of the algebra of regular functions on the universal (2-fold) cover M of certain nilpotent coadjoint orbits O for a complex simple Lie algebra g. Here O is the dense orbit in the cotangent bundle of the generalized flag variety X associated to a complexified Cartan decomposition g=(p^+)+k+(p^-) where p^+- are Jordan algebras by the TKK construction. We obtain E as the algebra of g-finite differential operators on a smooth Lagrangian subvariety in M where g is given by differential operators twisted according to a critical parameter. After Fourier transform, E is a quadratic extension of the algebra of twisted differential operators for a (formal) tensor power of the canonical bundle. Not only is E a Dixmier algebra for M, in the sense of the orbit method, but also E has a lot of additional structure,including an anti-automorphism, a supertrace, and a non-degenerate supersymmetric bilinear pairing. We show that E is the specialization at t=1 of a graded (non-local) equivariant star product with parity. | |
| dc.description | 37 pages; Latex; see http://www.math.psu.edu/rkb for more papers | |
| dc.identifier | https://arxiv.org/abs/math/0002117 | |
| dc.identifier | http://arxiv.org/abs/math/0002117 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/58691 | |
| dc.subject | Quantum Algebra | |
| dc.subject | Representation Theory | |
| dc.subject | Symplectic Geometry | |
| dc.subject | 22E46, 17B35, 53D55, 17C20, 43A85 | |
| dc.title | Quantization of Double Covers of Nilpotent Coadjoint Orbits I: Noncommutative Models | |
| dc.type | text |