Abstract
Based on an idea by Gan and Savin (Represent Theory 9:46–93, 2005), we give a classification of minimal representations of connected simple real Lie groups not of type A. Actually, we prove that there exist no new minimal representations up to infinitesimal equivalence.
Similar content being viewed by others
References
Barchini, L., Sepanski, M., Zierau, R.: Positivity of zeta distributions and small unitary representations. Contemp. Math. 398, 1–46 (2006)
Binegar, B., Zierau, R.: Unitarization of a singular representation of \({SO}(p, q)\). Commun. Math. Phys. 138, 245–258 (1991)
Bourbaki, N.: Groupes et algèbres de Lie, Chapitres \(4, 5\) et \(6\). Hermann, Paris (1968)
Braverman, A., Joseph, A.: The minimal realization from deformation theory. J. Algebra 205, 13–36 (1998)
Brylinski, R.: Geometric quantization of real minimal nilpotent orbits. Differ. Geom. Appl. 9(1–2), 5–58 (1998)
Brylinski, R., Kostant, B.: Differential operators on conical Laglangian manifolds. In: Brylinski, J.L., Brylinski, R., Guillemin, V., Kac, V. (eds.) Lie Theory and Geometry: In Honor of Bertram Kostant, Progr. Math., vol. 123. Birkhäuser, Boston (1994)
Brylinski, R., Kostant, B.: Minimal reprerentations of \({E}_6\), \({E}_7\), and \({E}_8\) and the generalized Capelli identity. Proc. Natl. Acad. Sci. USA 91(7), 2469–2472 (1994)
Brylinski, R., Kostant, B.: Minimal representations, geometric quantization, and unitarity. Proc. Natl. Acad. Sci. USA 91(13), 6026–6029 (1994)
Brylinski, R.: Kostant B (1995) Lagrangian models of minimal representations of \({E}_6\), \({E}_7\) and \({E}_8\). In: Gindikin, S., Lepowsky, J., Wilson, R. (eds.) Functional Analysis on the Eve of the 21st Century, Progr. Math., 131, vol. 1, pp. 13–63. Birkhäuser, Boston (1995)
Duflo, M.: Représentations unitaires irréductibles des groupes simples complexes de rang deux. Bull. Soc. Math. Fr. 107, 55–96 (1979)
Enright, T., Howe, R., Wallach, N.: A classification of unitary highest weight modules. In: Representation Theory of Reductive Groups, Progr. Math., vol. 40, pp. 97–143. Birkhäuser, Boston (1983)
Enright, T., Parthasarathy, R., Wallach, N., Wolf, J.: Unitary derived functor modules with small spectrum. Acta Math. 154(1–2), 105–136 (1985)
Folland, G.B.: Harmonic Analysis in Phase Space, Annals of Mathematics Studies, vol. 122. Princeton University Press, Princeton (1989)
Gan, W.T., Savin, G.: Uniqueness of Joseph ideal. Math. Res. Lett. 11, 589–597 (2004)
Gan, W.T., Savin, G.: On minimal representations definitions and properties. Represent. Theory 9, 46–93 (2005)
Garfinkle, D.: A new construction of the Joseph ideal. Ph.D. thesis, M.I.T. (1982)
Goncharov, A.B.: Constructions of Weil representations of some simple Lie algebras. Funktsional. Anal. i Prilozhen 16(2), 70–71 (1982)
Gross, B., Wallach, N.: A distinguished family of unitary representations for the exceptional groups of real rank \(=\) \(4\). In: Brylinski, J.L., Brylinski, R., Guillemin, V., Kac, V. (eds.) Lie Theory and Geometry: In Honor of Bertram Kostant, Progr. Math., vol. 123, pp. 289–304. Birkhäuser, Boston (1994)
Gross, B., Wallach, N.: On quaternionic discrete series representations, and their continuations. J. Reine Angew. Math. 481, 73–123 (1996)
Hilgert, J., Kobayashi, T., Möllers, J., Ørsted, B.: Fock model and Segal–Bargmann transform for minimal representations of Hermitian Lie groups. J. Funct. Anal. 263(11), 3492–3563 (2012)
Hilgert, J., Kobayashi, T., Möllers, J.: Minimal representations via Bessel operators. J. Math. Soc. Jpn. 66(2), 349–414 (2014)
Huang, J.S.: Minimal representations, shared orbits, and dual pair correspondences. Int. Math. Res. Notices 1995(6), 309–323 (1995)
Huang, J.S., Li, J.S.: Unipotent representations attached to spherical nilpotent orbits. Am. J. Math. 121(3), 497–517 (1999)
Humphreys, J.E.: Introduction to Lie Algebras and Representation Theory, Graduate Texts in Mathematics, vol. 9. Springer, New York (1978)
Jakobsen, H.P.: Hermitian symmetric spaces and their unitary highest weight modules. J. Funct. Anal. 52(3), 385–412 (1983)
Joseph, A.: The minimal orbit in a simple Lie algebra and its associated maximal ideal. Ann. Sci. École. Norm. Sup. (4) 9(1), 1–29 (1976)
Kazhdan, D.: The minimal representation of \({D}_{4}\). In: Connes, A., Duflo, M., Joseph, A., Rentschler, R. (eds.) Operator Algebras, Unitary Representations, Enveloping Algebras, and Invariant Theory, Progr. Math., vol. 92, pp. 125–158. Birkhäuser, Boston (1990)
Kazhdan, D., Savin, G.: The smallest representation of simply laced groups. In: Gelbert, S., Howe, R., Sarnak, P. (eds.) Festschrift in Honor of I. I. Piatetski-Shapiro on the Occasion of his Sixtieth Birthday. Part I., Israel Math. Conf. Proc., vol. 2, pp. 209–223. Weizmann Science Press of Israel, Jerusalem (1990)
Knapp, A.W.: Lie Groups Beyond an Introduction, Progr. Math., vol. 140, 2nd edn. Birkhäuser, Boston (2002)
Kobayashi, T.: Algebraic analysis of minimal representations. Publ. Res. Inst. Math. Sci. 47(2), 585–611 (2011)
Kobayashi, T., Mano, G.: The Schrödinger model for the minimal representation of the indefinite orthogonal group \({O}(p, q)\). Mem. Am. Math. Soc. 213, 1000 (2011)
Kobayashi, T., Ørsted, B.: Conformal geometry and branching laws for unitary representatins attached to minimal nilpotent orbits. C. R. Acad. Sci. Paris Sér. I Math. 326(8), 925–930 (1998)
Kobayashi, T., Ørsted, B.: Analysis on the minimal representation of \({O}(p, q)\), I. Realization via conformal geometry. Adv. Math. 180, 486–512 (2003)
Kobayashi, T., Ørsted, B.: Analysis on the minimal representation of \({O}(p, q)\). II. Branching laws. Adv. Math. 180, 513–550 (2003)
Kobayashi, T., Ørsted, B.: Analysis on the minimal representation of \({O}(p, q)\), III. Ultrahyperbolic equations on \({\mathbb{R}}^{p-1, q-1}\). Adv. Math. 180, 551–595 (2003)
Kobayashi, T., Oshima, Y.: Classification of symmetric pairs with discretely decomposable restrictions of \((\mathfrak{g}, k)\)-modules. J. Reine Angew. Math. 703, 201–223 (2015)
Kostant, B.: The vanishing scalar curvature and the minimal unitary representation of \({SO}(4,4)\). In: Connes, A., Duflo, M., Joseph, A., Rentschler, R. (eds.) Operator Algebras, Unitary Representations, Enveloping Algebras, and Invariant Theory, Progr. Math., vol. 92, pp. 85–124. Birkhäuser, Boston (1990)
Lepowsky, J., McCollum, G.W.: On the determination of irreducible modules by restriction to a subalgebra. Trans. Am. Math. Soc. 176, 45–57 (1973)
Li, J.S.: Minimal representations & reductive dual pairs. In: Representation theory of Lie groups (Park City, UT, 1998), IAS/Park City Math. Ser., vol. 8, pp. 293–340. Amer. Math. Soc., Providence (2000)
Loke, H.Y., Savin, G.: The smallest representations of nonlinear covers of odd orthogonal groups. Am. J. Math. 130(3), 763–797 (2008)
Okuda, T.: Smallest complex nilpotent orbits with real points. J. Lie Theory 25(2), 507–533 (2015)
Sabourin, H.: Une représentation unipotente associée à l’orbite minimale: Le cas de \(so(4,3)\). J. Funct. Anal. 137(2), 394–465 (1996)
Salmasian, H.: Isolatedness of the minimal representation and minimal decay of exceptional groups. Manuscr. Math. 120(1), 39–52 (2006)
Torasso, P.: Méthode des orbites de Kirillov-Duflo et représentations minimales des groupes simples sur un corps local de caractéristique nulle. Duke Math. J. 90(2), 261–377 (1997)
Vogan, D.: Singular unitary representations. In: Noncommutative harmonic analysis and Lie groups, Lecture Notes in Math., vol. 880, pp. 506–535. Springer, Berlin (1981)
Vogan, D.: The unitary dual of \({G}_2\). Invent. Math. 116(1–3), 677–791 (1994)
Acknowledgements
The author is deeply grateful to his advisor Prof. Toshiyuki Kobayashi for helpful comments and warm encouragement. The author expresses his sincere thanks to Dr. Yoshiki Oshima and Dr. Masatoshi Kitagawa for inspiring discussions. This work was supported by JSPS KAKENHI Grant Number 17J01075 and the Program for Leading Graduate Schools, MEXT, Japan.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Tamori, H. Classification of minimal representations of real simple Lie groups. Math. Z. 292, 387–402 (2019). https://doi.org/10.1007/s00209-019-02231-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00209-019-02231-x