Paramodular Cusp Forms
Number Theory
2009-12-02 v1
Abstract
We classify Siegel modular cusp forms of weight two for the paramodular group K(p) for primes p< 600. We find that weight two Hecke eigenforms beyond the Gritsenko lifts correspond to certain abelian varieties defined over the rationals of conductor p. The arithmetic classification is in a companion article by A. Brumer and K. Kramer. The Paramodular Conjecture, supported by these computations and consistent with the Langlands philosophy and the work of H. Yoshida, is a partial extension to degree 2 of the Shimura-Taniyama Conjecture. These nonlift Hecke eigenforms share Euler factors with the corresponding abelian variety and satisfy congruences modulo \ell with Gritsenko lifts, whenever has rational \ell-torsion.
Cite
@article{arxiv.0912.0049,
title = {Paramodular Cusp Forms},
author = {Cris Poor and David S. Yuen},
journal= {arXiv preprint arXiv:0912.0049},
year = {2009}
}