Hecke algebras, type III factors and phase transitions with spontaneous symmetry breaking in number theory
@article{Bost1995HeckeAT, title={Hecke algebras, type III factors and phase transitions with spontaneous symmetry breaking in number theory}, author={Jean-Beno{\^i}t Bost and Alain Connes}, journal={Selecta Mathematica}, year={1995}, volume={1}, pages={411-457} }
In this paper, we construct a naturalC*-dynamical system whose partition function is the Riemann ζ function. Our construction is general and associates to an inclusion of rings (under a suitable finiteness assumption) an inclusion of discrete groups (the associated ax+b groups) and the corresponding Hecke algebras of bi-invariant functions. The latter algebra is endowed with a canonical one parameter group of automorphisms measuring the lack of normality of the subgroup. The inclusion of rings…
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