Speaker
Jeroen Monnee
Description
We discuss the realization of the Emergent String Conjecture in certain infinite distance limits in the vector multiplet moduli space of Type IIB compactifications on Calabi-Yau threefolds. We establish the existence of a critical tensionless string corresponding to a heterotic string on T^2 x K3, in limits of type IIb that correspond to so-called Tyurin degenerations. We do so by combining the properties of the low-energy effective theory as captured in terms of the underlying limiting mixed Hodge structure, as well as the precise geometric degeneration of the Calabi-Yau threefold as described in terms of the underlying geometric mixed Hodge structure.
