English

A discrepancy result for Hilbert modular forms

Number Theory 2024-05-28 v2

Abstract

Let FF be a totally real number field and r=[F:Q].r=[F :\mathbb{Q}]. Let Ak(N,ω)A_k(\mathfrak{N},\omega) be the space of holomorphic Hilbert cusp forms with respect to K1(N)K_1(\mathfrak{N}), weight k=(k1,...,kr)k=(k_1,\,...\,,k_r) with kj>2,k_j>2, for all jj and central Hecke character ω\omega. For a fixed level N,\mathfrak{N}, we study the behavior of the Petersson trace formula for Ak(N,ω)A_k(\mathfrak{N},\omega) as k0k_0\rightarrow\infty where k0=min(k1,...,kr)k_0=\min(k_1,\,...\,,k_r). We give an asymptotic formula for the Petersson formula. As an application, we obtain a variant of a discrepancy result for classical cusp forms by Jung and Sardari for the space Ak(N,1),A_k(\mathfrak{N},1), where the ring of integers O\mathcal{O} has narrow class number 11, and the ideal N\mathfrak{N} is generated by integers.

Keywords

Cite

@article{arxiv.2307.16736,
  title  = {A discrepancy result for Hilbert modular forms},
  author = {Baskar Balasubramanyam and Jishu Das and Kaneenika Sinha},
  journal= {arXiv preprint arXiv:2307.16736},
  year   = {2024}
}

Comments

23 pages

R2 v1 2026-06-28T11:44:32.880Z