Quantum double construction in the C*-algebra setting of certain Heisenberg-type quantum groups

Details Quantum double construction in the C*-algebra setting of certain Heisenberg-type quantum groups Quantum double construction in the C*-algebra setting of certain Heisenberg-type quantum groups

2004-05-13

arxiv.org/abs/math/0405263v1

Mathematics

Operator Algebras

33 pages

Scientific paper

In this paper, we carry out the ``quantum double construction'' of the specific quantum groups we constructed earlier, namely, the ``quantum Heisenberg group algebra'' (A,\Delta) and its dual, the ``quantum Heisenberg group'' (\hat{A},\hat{\Delta}). Our approach will be by constructing a suitable multiplicative unitary operator. In this way, we are able to retain the C*-algebra framework, and thus able to carry out our construction within the category of locally compact quantum groups. This construction is a kind of a generalized crossed product. To establish that the quantum double we obtain is indeed a locally compact quantum group, we will also discuss the dual of the quantum double and the Haar weights on both of these double objects. Towards the end, we also include a construction of a (quasitriangular) ``quantum universal R-matrix''.

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