{ "id": "2108.10545", "version": "v1", "published": "2021-08-24T06:56:13.000Z", "updated": "2021-08-24T06:56:13.000Z", "title": "The wave front set correspondence for dual pairs with one member compact", "authors": [ "M. McKee", "A. Pasquale", "T. Przebinda" ], "comment": "arXiv admin note: substantial text overlap with arXiv:1405.2431", "categories": [ "math.RT" ], "abstract": "Let W be a real symplectic space and (G,G') an irreducible dual pair in Sp(W), in the sense of Howe, with G compact. Let $\\widetilde{\\mathrm{G}}$ be the preimage of G in the metaplectic group $\\widetilde{\\mathrm{Sp}}(\\mathrm{W})$. Given an irreducible unitary representation $\\Pi$ of $\\widetilde{\\mathrm{G}}$ that occurs in the restriction of the Weil representation to $\\widetilde{\\mathrm{G}}$, let $\\Theta_\\Pi$ denote its character. We prove that, for the embedding $T$ of $\\widetilde{\\mathrm{Sp}}(\\mathrm{W})$ in the space of tempered distributions on W given by the Weil representation, the distribution $T(\\check\\Theta_\\Pi)$ has an asymptotic limit. This limit is an orbital integral over a nilpotent orbit $\\mathcal O_m\\subseteq \\mathrm{W}$. The closure of the image of $\\mathcal O_m$ in $\\mathfrak{g}'$ under the moment map is the wave front set of $\\Pi'$, the representation of $\\widetilde{\\mathrm{G}'}$ dual to $\\Pi$.", "revisions": [ { "version": "v1", "updated": "2021-08-24T06:56:13.000Z" } ], "analyses": { "subjects": [ "22E45", "22E46", "22E30" ], "keywords": [ "wave front set correspondence", "member compact", "weil representation", "real symplectic space", "orbital integral" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }