  Let k be a field and A a noetherian (noncommutative) k-algebra. The rigid
dualizing complex of A was introduced by Van den Bergh. When A = U(g), the
enveloping algebra of a finite dimensional Lie algebra g, Van den Bergh
conjectured that the rigid dualizing complex is (U(g) \otimes \wedge^{n} g)[n],
where n = dim g. We prove this conjecture, and give a few applications in
representation theory and Hochschild cohomology.
