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Epipelagic representations and rigid local systems

Epipelagic representations and rigid local systems We construct automorphic representations for quasi-split groups G over the function field $$F=k(t)$$ F = k ( t ) one of whose local components is an epipelagic representation in the sense of Reeder and Yu. We also construct the attached Galois representations under the Langlands correspondence. These Galois representations give new classes of conjecturally rigid, wildly ramified $${}^{L}{G}$$ L G -local systems over $$\mathbb {P}^{1}-\{0,\infty \}$$ P 1 - { 0 , ∞ } that generalize the Kloosterman sheaves constructed earlier by Heinloth, Ngô and the author. We study the monodromy of these local systems and compute all examples when G is a classical group. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Selecta Mathematica Springer Journals

Epipelagic representations and rigid local systems

Selecta Mathematica , Volume 22 (3) – Jan 4, 2016

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References (32)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer International Publishing
Subject
Mathematics; Mathematics, general
ISSN
1022-1824
eISSN
1420-9020
DOI
10.1007/s00029-015-0204-z
Publisher site
See Article on Publisher Site

Abstract

We construct automorphic representations for quasi-split groups G over the function field $$F=k(t)$$ F = k ( t ) one of whose local components is an epipelagic representation in the sense of Reeder and Yu. We also construct the attached Galois representations under the Langlands correspondence. These Galois representations give new classes of conjecturally rigid, wildly ramified $${}^{L}{G}$$ L G -local systems over $$\mathbb {P}^{1}-\{0,\infty \}$$ P 1 - { 0 , ∞ } that generalize the Kloosterman sheaves constructed earlier by Heinloth, Ngô and the author. We study the monodromy of these local systems and compute all examples when G is a classical group.

Journal

Selecta MathematicaSpringer Journals

Published: Jan 4, 2016

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