paper

Periods of Drinfeld modules and local shtukas with complex multiplication

arXiv:1603.03194 · doi:10.1017/S1474748017000494

Abstract

Colmez conjectured a product formula for periods of abelian varieties over number fields with complex multiplication and proved it in some cases. His conjecture is equivalent to a formula for the Faltings height of CM abelian varieties in terms of the logarithmic derivatives at of certain Artin -functions. In a series of articles we investigate the analog of Colmez's theory in the arithmetic of function fields. There abelian varieties are replaced by Drinfeld modules and their higher dimensional generalizations, so-called -motives. In the present article we prove the product formula for the Carlitz module and we compute the valuations of the periods of a CM -motive at all finite places in terms of Artin -series. The latter is achieved by investigating the local shtukas associated with the -motive.

v2: 28 pages, final version, appeared in J. Inst. Math. Jussieu 19 (2020), no. 1, 175--208, v3, v4: 32 pages, final version plus an erratum in appendix B

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