A categorification of finite-dimensional irreducible representations of quantum sl(2) and their tensor products

Details A categorification of finite-dimensional irreducible representations of quantum sl(2) and their tensor products A categorification of finite-dimensional irreducible representations of quantum sl(2) and their tensor products

2005-11-18

arxiv.org/abs/math/0511467v1

Selecta Mathematica 2007

Mathematics

Quantum Algebra

Scientific paper

The purpose of this paper is to study categorifications of tensor products of finite dimensional modules for the quantum group for sl(2). The main categorification is obtained using certain Harish-Chandra bimodules for the complex Lie algebra gl(n). For the special case of simple modules we naturally deduce a categorification via modules over the cohomology ring of certain flag varieties. Further geometric categorifications and the relation to Steinberg varieties are discussed. We also give a categorical version of the quantised Schur-Weyl duality and an interpretation of the (dual) canonical bases and the (dual) standard bases in terms of projective, tilting, standard and simple Harish-Chandra bimodules.

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