Singularities of metrics on Hodge bundles and their topological invariants

Date: 
2017/09/29 Fri 15:15 - 16:45
Room: 
Room 152, Building No.3
Speaker: 
Dennis Eriksson
Affiliation: 
Chalmers, Gothenburg
Abstract: 

For a family of compact complex manifolds, the direct image of the canonical bundle (or Hodge bundle) admits a natural metric. Approaching singular fibers this metric degenerates, and we provide explicit expressions for the dominant terms in the Calabi-Yau case. These are described in terms of topological invariants coming from vanishing cycles or limit Hodgestructures. I will also discuss applications to BCOV-torsion or metrics, whose motivation originally came from mirror symmetry. This is joint work with Gerard Freixas and Christophe Mourougane.