A.M. Semikhatov

  1. Yetter--Drinfeld structures on Heisenberg doubles and chains.

    Authors: A.M. Semikhatov
    Subjects: Quantum Algebra
    Abstract

    We show that the Heisenberg double H(B^*) is a Yetter--Drinfeld module
    algebra over the Drinfeld double D(B) for any Hopf algebra B with bijective
    antipode. We use a braiding structure to generalize H(B^*) = B^{*cop} # B to
    "Heisenberg n-tuples" and "chains" ... # B^{*cop} # B # B^{*cop} # B # ..., all
    of which are Yetter--Drinfeld D(B)-modules. For B a particular Taft Hopf
    algebra at a 2p-th root of unity, a certain truncation of these constructions
    yields Yetter--Drinfeld module algebras and Yetter--Drinfeld modules over the
    2p^3-dimensional quantum group U_q(sl_2).

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