Invariant Differential Operators for Non-Compact Lie Groups: Parabolic Subalgebras

Abstract

In the present paper we start the systematic explicit construction of invariant differential operators by giving explicit description of one of the main ingredients - the cuspidal parabolic subalgebras. We explicate also the maximal parabolic subalgebras, since these are also important even when they are not cuspidal. Our approach is easily generalised to the supersymmetric and quantum group settings and is necessary for applications to string theory and integrable models.

44 pages; V2: important addition in Section 3 and misprints corrected; more corrections in Section 3; v3-v6: various corrections; v7: corrections in (11.7),(11.9),(11.11), and correspondingly in the Appendix; v8: added dimensions of N-factors where missing; v9: added missing case in 11.37; v10: corrected misprint in 11.17; v11: added missing case in 11.37; v12: typos corrected in (11.7),(11.9)

References in corpus (1)

• Invariant Differential Operators and Characters of the AdS_4 Algebra

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