Orbital theory for affine Lie algebras
Orbital theory for affine Lie algebras
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仿射李代数的轨道理论
DOI:
10.1007/bf01388449
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发表时间:
1984
期刊:
影响因子:
--
通讯作者:
I. Frenkel
中科院分区:
文献类型:
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作者:
I. Frenkel
Let G be a group of nonbased C ('(INFIN))-loops on a compact simple Lie group G with Lie algebra, let be the corresponding loop algebra and the nontrivial central extension of. Then is isomorphic to the completion, in an appropriate topology, of the Kac-Moody algebra with affine Cartan matrix corresponding to. We describe G-orbits in, the dual space of, and show by using the Floquet theory of linear differential equations with periodic coefficients, that every orbit contains a constant loop. We then formulate a Kirillov character formula for the irreducible representations of with highest weight, by means of orbital integrals with respect to Gaussian measure on. To prove this formula we reduce it, with the help of the Kac-Weyl character formula for constant loops, to the calculation of an integral with respect to conditional Wiener measure. The calculation of the latter integral is based on the theory of Wiener measure and Brownian motion on homogeneous manifolds.
DOI:
10.1007/978-3-642-66243-0
发表时间:
1976
期刊:
Energy Sources, Part B: Economics, Planning, and Policy
影响因子:
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作者:
A. Kirillov
通讯作者:
A. Kirillov