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Brundan-Kazhdan-Lusztig and super duality conjectures

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arxiv 0705.0050 v2 pith:67RY7QJE submitted 2007-05-01 math.RT math.COmath.QA

Brundan-Kazhdan-Lusztig and super duality conjectures

classification math.RT math.COmath.QA
keywords conjectureparabolicdualitysuperbrundan-kazhdan-lusztigkazhdan-lusztigmodulespolynomials
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We formulate a general super duality conjecture on connections between parabolic categories O of modules over Lie superalgebras and Lie algebras of type A, based on a Fock space formalism of their Kazhdan-Lusztig theories which was initiated by Brundan. We show that the Brundan-Kazhdan-Lusztig (BKL) polynomials for Lie superalgebra gl(m|n) in our parabolic setup can be identified with the usual parabolic Kazhdan-Lusztig polynomials. We establish some special cases of the BKL conjecture on the parabolic category O of gl(m|n)-modules and additional results which support the BKL conjecture and super duality conjecture.

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