Abstract
Consider the W-algebra H attached to the minimal nilpotent orbit in a simple Lie algebra g over an algebraically closed field of characteristic 0. We show that if an analogue of the Gelfand–Kirillov conjecture holds for such a W-algebra, then it holds for the universal enveloping algebra U(g). This, together with a result of A. Premet, implies that the analogue of the Gelfand–Kirillov conjecture fails for some W-algebras attached to the minimal nilpotent orbit in Lie algebras of types Bn(n≥3), Dn(n≥4), E6,E7,E8, and F4.
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