Fine deformation conjecture for self-dual Galois representations

From papers

Let EE be the number field in the deformation problem, let VV be an absolutely irreducible crystalline pp-adic representation with the stated self-duality and distinct local data, and let XV,fX_{V,f} be its fine deformation functor. Let XV,FX_{V,\mathcal F} be the refined deformation functor associated with a refinement F\mathcal F, and let κ\partial\kappa be the induced weight-direction map. Fine and refined deformation conjectures.

  1. XV,fX_{V,f} is a closed point.
  2. If F\mathcal F is noncritical, then κ\partial\kappa is an isomorphism; in particular, XV,FX_{V,\mathcal F} is formally smooth of dimension mm.

These conjectures describe the expected rigidity of fine deformations and smoothness of the refined deformation space. The paper later relates them to the Bloch–Kato conjecture, but presents them here as conjectural.

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Sources & referencesView supporting material

Primary source

Joel Bellaiche and Gaetan Chenevier, “p-adic families of Galois representations and higher rank Selmer groups”, arXiv:math/0602340 (2007).

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