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The Dirac operator on compact quantum groups

  • Sergey Neshveyev and Lars Tuset
Published/Copyright: January 20, 2010
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Journal für die reine und angewandte Mathematik
From the journal Volume 2010 Issue 641

Abstract

For the q-deformation Gq, 0 < q < 1, of any simply connected simple compact Lie group G we construct an equivariant spectral triple which is an isospectral deformation of that defined by the Dirac operator D on G. Our quantum Dirac operator Dq is a unitary twist of D considered as an element of U𝔤 ⊗ Cl(𝔤). The commutator of Dq with a regular function on Gq consists of two parts. One is a twist of a classical commutator and so is automatically bounded. The second is expressed in terms of the commutator of the associator with an extension of D. We show that in the case of the Drinfeld associator the latter commutator is also bounded.

Received: 2007-06-21
Published Online: 2010-01-20
Published in Print: 2010-April

© Walter de Gruyter Berlin · New York 2010

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