Kodaira dimension of universal holomorphic symplectic varieties

Abstract

We prove that the Kodaira dimension of the n-fold universal family of lattice-polarized holomorphic symplectic varieties with dominant and generically finite period map stabilizes to the moduli number when n is sufficiently large. Then we study the transition of Kodaira dimension explicitly, from negative to nonnegative, for known explicit families of polarized symplectic varieties. In particular, we determine the exact transition point in the cases of Beauville-Donagi and Debarre-Voisin, where the Borcherds Phi_{12} form plays a crucial role.

double EPW sextics included

References in corpus (3)

• Automorphisms of hyperkähler manifolds
• Mukai models and Borcherds products
• Addendum to "K3-surfaces of genus 8 and varieties of sums of powers of cubic fourfolds"

Cited by in corpus (1)

• Differential forms on universal K3 surfaces