Anne-Marie Aubert, Paul Baum, Roger Plymen, Maarten Solleveld
Published 2013-05-12, updated 2014-03-07Version 3
Let F be a non-archimedean local field. We establish the local Langlands correspondence for all inner forms of the group $SL_n (F)$. It takes the form of a bijection between, on the one hand, conjugacy classes of Langlands parameters for $SL_n (F)$ enhanced with an irreducible representation of an S-group and, on the other hand, the union of the spaces of irreducible admissible representations of all inner forms of $SL_n (F)$. An analogous result is shown in the archimedean case. To settle the case where F has positive characteristic, we employ the method of close fields. We prove that this method is compatible with the local Langlands correspondence for inner forms of $GL_n (F)$, when the fields are close enough compared to the depth of the representations.
Comments: In the second version Theorem 5.3 was restricted to n' = n-1 and the proof was modified accordingly. Also references to the work of Ganapathy were added. It turned out that the proof of Theorem 4.4 in versions 1 and 2 was incorrect and beyond repair, so we removed this result in version 3. Consequently Theorems 4.4 and 6.1 (from v1 and v2) only remain valid with worse lower bounds
Rectifiers and the local Langlands correspondence: the unramified case
Dual R-groups of the inner forms of SL(N)
Lowest $K$-types in the local Langlands correspondence
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