Paulin's geometric level raising conjecture for the eigencurve

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Fix distinct primes pp and ll, and an integer NN coprime to plpl. Let E\mathcal{E} be the cuspidal eigencurve of tame level Γ0(Nl)\Gamma_0(Nl), parametrising overconvergent cuspidal pp-adic modular eigenforms. For a point ϕ\phi of E\mathcal{E} corresponding to an eigenform fϕf_\phi, let πfϕ,l\pi_{f_\phi,l} be the associated representation of GL2(Ql)\mathrm{GL}_2(\mathbb{Q}_l). An irreducible connected component Z\mathcal{Z} of E\mathcal{E} is generically unramified principal series if the representations associated to its points away from a discrete set are unramified principal series, and generically special if they are special away from a discrete set. Let α\alpha and β\beta be the roots of

X2−tlX+lsl,X^2-t_lX+ls_l,

where tlt_l and sls_l are the TlT_l and SlS_l eigenvalues of fϕf_\phi. Paulin's geometric level raising conjecture. If Z\mathcal{Z} is generically unramified principal series and there is a point ϕ\phi on Z\mathcal{Z} where the ratio of α\alpha and β\beta is l±1l^{\pm 1} and πfϕ,l\pi_{f_\phi,l} is special, then there exists a generically special component Z′\mathcal{Z'} intersecting Z\mathcal{Z} at ϕ\phi. This predicts that a special representation at a level-raising point lies on a component whose generic local representation is special, extending geometric level raising phenomena on the eigencurve beyond the cases established by the paper's theorem.

References

Primary source

James Newton, “Geometric level raising for p-adic automorphic forms”, arXiv:0903.3541 (2011).

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