Epsilon constants and equivariant Arakelov Euler characteristics
摘要
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-Nogu\`{e}s 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.
引用
@article{arxiv.math/0006095,
title = {Epsilon constants and equivariant Arakelov Euler characteristics},
author = {T. Chinburg and G. Pappas and M. J. Taylor},
journal= {arXiv preprint arXiv:math/0006095},
year = {2007}
}
备注
54 pages, LaTex