Iwasawa theory of de Rham (ϕ,Γ)-modules over the Robba rings

The aim of this article is to study Bloch-Kato's exponential map and Perrin-Riou's "big" exponential map purely in terms of (ϕ,Γ)-modules over the Robba ring. We first generalize the definition of Bloch-Kato's exponential map for all the (ϕ,Γ)-modules without using Fontaine's rings B_{cris}, B_{dR} of p-adic periods and then we generalize the construction of Perrin-Riou's "big" exponential map for all the de Rham (ϕ,Γ)-modules and prove that this map interpolates our Bloch-Kato's exponential map and the dual exponential map. Finally, we prove a theorem concerning to the determinant of our "big" exponential map, which is a generalization of Perrin-Riou's δ(V)-conjecture. The key ingredients for our study are Pottharst's theory of analytic Iwasawa cohomology and Berger's construction of p-adic differential equations associated to de Rham (ϕ,Γ)-modules.

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