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Published online by Cambridge University Press: 03 September 2020
Let $n$ be either $2$ or an odd integer greater than $1$, and fix a prime $p>2(n+1)$. Under standard ‘adequate image’ assumptions, we show that the set of components of $n$-dimensional $p$-adic potentially semistable local Galois deformation rings that are seen by potentially automorphic compatible systems of polarizable Galois representations over some CM field is independent of the particular global situation. We also (under the same assumption on $n$) improve on the main potential automorphy result of Barnet-Lamb et al. [Potential automorphy and change of weight, Ann. of Math. (2) 179(2) (2014), 501–609], replacing ‘potentially diagonalizable’ by ‘potentially globally realizable’.
The first author was supported in part by NSF Grants DMS-1404620 and DMS-1701703. The second author was supported in part by NSF Grants DMS-1303450, DMS-1601871, and DMS-1902307. The third author was supported in part by a Leverhulme Prize, EPSRC Grant EP/L025485/1, Marie Curie Career Integration Grant 303605, ERC Starting Grant 306326, and a Royal Society Wolfson Research Merit Award.