Weighted projective spaces and minimal nilpotent orbits

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We investigate (twisted) rings of differential operators on the resolution of singularities of a particular irreducible component of the (Zarisky) closure of the minimal orbit Omin of sp₂ₙ, intersected with the Borel subalgebra n+ of sp₂ₙ, using toric geometry and show that they are homomorphic images of a subalgebra of the Universal Enveloping Algebra (UEA) of sp₂ₙ, which contains the maximal parabolic subalgebra p determining the minimal nilpotent orbit. Further, using Fourier transforms on Weyl algebras, we show that (twisted) rings of well-suited weighted projective spaces are obtained from the same subalgebra. Finally, investigating this subalgebra from the representation-theoretical point of view, we find new primitive ideals and rediscover old ones for the UEA of sp₂ₙ coming from the aforementioned resolution of singularities.