Summary
The moment map of symplectic geometry is extended to associate to any unitary representation of a nilpotent Lie group aG-invariant subset of the dual of the Lie algebra. We prove that this subset is the closed conex hull of the Kirillov orbit of the representation.
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Arnal, D., Cortet, J.C. [1]: Nilpotent Fourier transform and applications. Lett. Math. Phys.9, 25–34 (1985)
Atiyah, M.F. [1]: Convexity and commuting Hamiltonians. Bull. Lond. Math. Soc.14, 1–15 (1982)
Atiyah, M.F. [2]: Angular Momentum, Convex polyhedra and Algebraic Geometry. Proc. Edinburgh Math. Soc.26, 121–138 (1983)
Grünbaum, B. [1]: Convex Polytopes. New York: John Wiley and Sons 1967
Guillemin, V., Sternberg, S. [1]: Convexity Properties of the moment mapping. Invent. Math.67, 491–513 (1982)
Guillemin, V., Sternberg, S. [2]: Convexity Properties of the moment mapping, II. Invent. Math.77, 533–546 (1984)
Howe, R. [1]: Quantum mechanics and partial differential equations. J. Funct. Anal.38, 188–254 (1980)
Kirillov, A.A. [1]: Representations of Nilpotent Lie Groups. Russian Math. Surveys17, 53–103 (1962)
Kirwan, F. [1]: Convexity Properties of the moment mapping, III. Invent. Math.77, 547–552 (1984)
Kostant, B. [1]: Quantization and Unitary Representations. Lect. Notes Math. vol. 170, Berlin Heidelberg New York: Springer, 1970, pp. 87–208
Souriau, J.M. [1]: Structure des systèmes dynamiques. Paris: Dunod, 1970
Wildberger, N.J. [1]: Quantization and Harmonic Analysis on Nilpotent Lie groups. Thesis, Yale University 1983
Wildberger, N.J. [2]: The moment map of a Lie group representation (preprint)
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Supported by NSERC research grant no. A7918
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Wildberger, N.J. Convexity and unitary representations of nilpotent Lie groups. Invent Math 98, 281–292 (1989). https://doi.org/10.1007/BF01388854
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DOI: https://doi.org/10.1007/BF01388854