On $p$-adic Asai $L$-functions of Bianchi modular forms at non-ordinary primes and their decomposition into bounded $p$-adic $L$-functions

Fuente: arXiv
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Autore principale: Deo, Mihir
Natura: Preprint
Pubblicazione: 2025
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author Deo, Mihir
author_facet Deo, Mihir
contents Let $p$ be an odd prime integer, $F/\mathbb{Q}$ be an imaginary quadratic field, and $Ψ$ be a small slope cuspidal Bianchi modular form over $F$ which is non-ordinary at $p$. In this article, we first construct a $p$-adic distribution $L^{\mathrm{As}}_{p}(Ψ)$ that interpolates the twisted critical $L$-values of Asai (or twisted tensor) $L$-function of $Ψ$, generalizing the works of Loeffler--Williams from the ordinary case to the non-ordinary case. To obtain this distribution, we construct some polynomials using Asai--Eisenstein elements: the Betti analogue of the Euler system machinery, developed by Loeffler--Williams. We use some techniques analogous to those of Loeffler--Zerbes for interpolating the twists of Beilinson--Flach elements arising in the Euler system associated with Rankin--Selberg convolutions of elliptic modular forms. We also use the interpolation method developed by Amice--Vélu, Perrin-Riou, and Büyükboduk--Lei in the construction. Furthermore, under some assumptions, we decompose these unbounded $p$-adic distributions into the linear combination of bounded measures as done by Pollack, Sprung, and Lei--Loeffler--Zerbes in the elliptic modular forms case.
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spellingShingle On $p$-adic Asai $L$-functions of Bianchi modular forms at non-ordinary primes and their decomposition into bounded $p$-adic $L$-functions
Deo, Mihir
Number Theory
Let $p$ be an odd prime integer, $F/\mathbb{Q}$ be an imaginary quadratic field, and $Ψ$ be a small slope cuspidal Bianchi modular form over $F$ which is non-ordinary at $p$. In this article, we first construct a $p$-adic distribution $L^{\mathrm{As}}_{p}(Ψ)$ that interpolates the twisted critical $L$-values of Asai (or twisted tensor) $L$-function of $Ψ$, generalizing the works of Loeffler--Williams from the ordinary case to the non-ordinary case. To obtain this distribution, we construct some polynomials using Asai--Eisenstein elements: the Betti analogue of the Euler system machinery, developed by Loeffler--Williams. We use some techniques analogous to those of Loeffler--Zerbes for interpolating the twists of Beilinson--Flach elements arising in the Euler system associated with Rankin--Selberg convolutions of elliptic modular forms. We also use the interpolation method developed by Amice--Vélu, Perrin-Riou, and Büyükboduk--Lei in the construction. Furthermore, under some assumptions, we decompose these unbounded $p$-adic distributions into the linear combination of bounded measures as done by Pollack, Sprung, and Lei--Loeffler--Zerbes in the elliptic modular forms case.
title On $p$-adic Asai $L$-functions of Bianchi modular forms at non-ordinary primes and their decomposition into bounded $p$-adic $L$-functions
topic Number Theory
url https://arxiv.org/abs/2501.10581