Year: 2000
Type: preprint
Abstract: We study equivariant Arakelov-Euler characteristics of hermitian sheaves on arithmetic varieties which support a tame action by a finite group G. The tameness of the group action allows us to produce an equivariant Arakelov-Euler characteristic in a particularly fine "projective" arithmetic class group. We then show that the equivariant Arakelov-Euler characteristics of various complexes of differentials determine the epsilon constants of the L-functions of the motives obtained from the arithmetic variety using symplectic representations of the group G. Our results may be viewed firstly as a higher dimensional version of the Cassou-Noguès Taylor characterization of symplectic Artin root numbers in terms of the hermitian structure of rings of integers, and secondly as a signed equivariant version of Bloch's conductor formula.
Source: arXiv (Cornell University)
Authors: Chinburg, T., Pappas, G., Taylor, M. J.
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2951273531