Abstract.
We construct an equivariant microlocal lift for locally symmetric spaces. In other words, we demonstrate how to lift, in a semi-canonical fashion, limits of eigenfunction measures on locally symmetric spaces to Cartan-invariant measures on an appropriate bundle. The construction uses elementary features of the representation theory of semisimple real Lie groups, and can be considered a generalization of Zelditch’s results from the upper half-plane to all locally symmetric spaces of noncompact type. This will be applied in a sequel to settle a version of the quantum unique ergodicity problem on certain locally symmetric spaces.
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The second author was supported in part by NSF Grant DMS-0245606. Part of this work was performed at the Clay Institute Mathematics Summer School in Toronto.
Received: September 2005 Revision: August 2006 Accepted: August 2006
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Silberman, L., Venkatesh, A. On Quantum Unique Ergodicity for Locally Symmetric Spaces. GAFA, Geom. funct. anal. 17, 960–998 (2007). https://doi.org/10.1007/s00039-007-0611-1
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DOI: https://doi.org/10.1007/s00039-007-0611-1
Keywords and phrases:
- Automorphic forms
- locally symmetric spaces
- Lie groups
- quantum chaos
- quantum unique ergodicity
- microlocal lift
- invariant measures