English

Heights of Special Points on Quaternionic Shimura Varieties

Number Theory 2023-09-19 v1

Abstract

Let B/FB/F be a quaternion algebra over a totally real number field. We give an explicit formula for heights of special points on the quaternionic Shimura variety associated with BB in terms of Faltings heights of CM abelian varieties. Special points correspond to CM fields EE and partial CM-types ϕHom(E,C)\phi \subset \mathrm{Hom}(E, \mathbb{C}). We then show that our height is compatible with the canonical height of a partial CM-type defined by Pila, Shankar, and Tsimerman. This gives another proof that the height of a partial CM-type is bounded subpolynomially in terms of the discriminant of EE.

Keywords

Cite

@article{arxiv.2309.08886,
  title  = {Heights of Special Points on Quaternionic Shimura Varieties},
  author = {Roy Zhao},
  journal= {arXiv preprint arXiv:2309.08886},
  year   = {2023}
}

Comments

30 pages. Comments welcome