Low-lying zeros in families of elliptic curve L-functions over function fields

Patrick Meisner, Anders Södergren*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We investigate the low-lying zeros in families of L-functions attached to quadratic and cubic twists of elliptic curves defined over Fq(T). In particular, we present precise expressions for the expected values of traces of high powers of the Frobenius class in these families with a focus on the lower order behavior. As an application we obtain results on one-level densities and we verify that these elliptic curve families have orthogonal symmetry type. In the quadratic twist families our results refine previous work of Comeau-Lapointe. Moreover, in this case we find a lower order term in the one-level density reminiscent of the deviation term found by Rudnick in the hyperelliptic ensemble. On the other hand, our investigation is the first to treat these questions in families of cubic twists of elliptic curves and in this case it turns out to be more complicated to isolate lower order terms due to a larger degree of cancellation among lower order contributions.

Original languageEnglish
Article number102096
JournalFinite Fields and Their Applications
StatePublished - Dec 2022
Externally publishedYes


  • Elliptic curves
  • Frobenius class
  • Function fields over finite fields
  • L-functions
  • One-level density
  • Quadratic and cubic twists


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