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The Chowla–Selberg formula for abelian CM fields and Faltings heights

Published online by Cambridge University Press:  24 September 2015

Adrian Barquero-Sanchez
Affiliation:
Department of Mathematics, Mailstop 3368, Texas A&M University, College Station, TX 77843-3368, USA email adrianbs11@math.tamu.edu
Riad Masri
Affiliation:
Department of Mathematics, Mailstop 3368, Texas A&M University, College Station, TX 77843-3368, USA email masri@math.tamu.edu
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Abstract

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In this paper we establish a Chowla–Selberg formula for abelian CM fields. This is an identity which relates values of a Hilbert modular function at CM points to values of Euler’s gamma function ${\rm\Gamma}$ and an analogous function ${\rm\Gamma}_{2}$ at rational numbers. We combine this identity with work of Colmez to relate the CM values of the Hilbert modular function to Faltings heights of CM abelian varieties. We also give explicit formulas for products of exponentials of Faltings heights, allowing us to study some of their arithmetic properties using the Lang–Rohrlich conjecture.

Information

Type
Research Article
Copyright
© The Authors 2015