Speaker
Dr
Daniel Kläwer
(Mainz University)
Description
We revisit infinite distance limits in the Kähler moduli space of F-theory compactifications to 4D with $\mathcal{N}=1$ supersymmetry. At the classical level, it is known that the existence of certain such limits imposes the structure of a rational or genus-one fibration on the three-dimensional base. As the fiber volume vanishes in the limit, wrapping the D3 brane on it gives rise to an emergent tensionless heterotic or type II string. We argue that this string is unique. Since the limit involves a shrinking cycle, one could expect that any such limit is obstructed in the quantum theory. We demonstrate that such an obstruction is generically present for limits with a finite volume of the three-dimensional base. Relaxing the assumption of finite volume, we exhibit modified limits which survive the leading correction and are not of the decompactification type. Finally, we will discuss whether the weak gravity conjecture survives these corrections.
Primary authors
Dr
Daniel Kläwer
(Mainz University)
Max Wiesner
(IFT Madrid)
Seung-Joo Lee
(IBS-CTPU)
Timo Weigand
(CERN)
