The bulk of my work is in the Rankin-Selberg
method, and much of it is joint with David Ginzburg. The Rankin-Selberg method
is a method of studying the Dirichlet series with Euler product, known as L
functions, which were attached by Langlands to automorphic representations of
adele groups. The local computations involved often require specialized branching
rules or tensor product formulae for families of finite dimensional representation
of complex Lie groups, and have interesting connections with invariant theory.
Global applications to functoriality often involve characterizing the image
of functorial lifts.
Selected
Publications
(with D. Ginzburg) On Spin L
functions for GSO(10) J. Reine Angew. Math. 603 (2007) pp 183-213.