An anticyclotomic Euler system for adjoint modular Galois representations
[Un système d’Euler anticyclotomique pour les représentations de Galois modulaires adjointes]
Annales de l'Institut Fourier, Online first, 39 p.

Soit K un corps quadratique imaginaire et p un nombre premier décomposé dans K. Dans cet article, on construit un système d’Euler anticyclotomique pour le changement de base à K de la représentation adjointe associée aux formes modulaires elliptiques. On relie ce système d’Euler à une fonction L p-adique obtenue à partir de la construction par Eischen–Wan et Eischen–Harris–Li–Skinner des fonctions L p-adiques pour les groupes unitaires. Ceci nous permet de déduire des nouveaux cas de la conjecture de Bloch–Kato en rang zéro, ainsi qu’une divisibilité vers une conjecture principale d’Iwasawa.

Let K be an imaginary quadratic field and p a prime split in K. In this paper we construct an anticyclotomic Euler system for the adjoint representation attached to elliptic modular forms base changed to K. We also relate our Euler system to a p-adic L-function deduced from the construction by Eischen–Wan and Eischen–Harris–Li–Skinner of p-adic L-functions for unitary groups. This allows us to derive new cases of the Bloch–Kato conjecture in rank zero, and a divisibility towards an Iwasawa main conjecture.

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DOI : 10.5802/aif.3646
Classification : 11R23, 11F85, 14G35
Keywords: Symmetric square, Euler systems, diagonal cycles, $p$-adic families of modular forms, Bloch–Kato conjecture, Iwasawa theory.
Mot clés : Carré symétrique, systèmes d’Euler, cycles diagonaux, familles $p$-adiques de formes modulaires, conjecture de Bloch–Kato, théorie d’Iwasawa.
Alonso, Raúl 1 ; Castella, Francesc 2 ; Rivero, Óscar 3

1 Department of Mathematics, Princeton University, Princeton, NJ 08544-1000 (USA)
2 Department of Mathematics, University of California, Santa Barbara, CA 93106 (USA)
3 Simons Laufer Mathematical Sciences Institute, 17 Gauss Way, Berkeley, CA 94720 (USA)
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Alonso, Raúl; Castella, Francesc; Rivero, Óscar. An anticyclotomic Euler system for adjoint modular Galois representations. Annales de l'Institut Fourier, Online first, 39 p.

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