Author/Authors :
Benedict H. Gross، نويسنده , , Curtis T. McMullen ، نويسنده ,
Abstract :
In this paper we study the characteristic polynomials S(x)=det(xI−FIIp,q) of automorphisms of even unimodular lattices with signature (p,q). In particular, we show that any Salem polynomial of degree 2n satisfying S(−1)S(1)=(−1)n arises from an automorphism of an indefinite lattice, a result with applications to K3 surfaces.
