In mathematics, the orbit method (also known as the Kirillov theory, the method of coadjoint orbits and by a few similar names) establishes a correspondence between irreducible unitary representations of a Lie group and its coadjoint orbits: orbits of the action of the group on the dual space of its Lie algebra. The theory was introduced by Kirillov (1961, 1962) for nilpotent groups and later extended by Bertram Kostant, Louis Auslander, Lajos Pukánszky and others to the case of solvable groups. Roger Howe found a version of the orbit method that applies to p-adic Lie groups.[1]
David Vogan proposed that the orbit method should serve as a unifying principle in the description of the unitary duals of real reductive Lie groups.[2]
^Howe, Roger (1977), "Kirillov theory for compact p-adic groups", Pacific Journal of Mathematics, 73 (2): 365–381, doi:10.2140/pjm.1977.73.365
^Vogan, David (1986), "Representations of reductive Lie groups", Proceedings of the International Congress of Mathematicians (Berkeley, California): 245–266
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