Schedule: Fall Term 2025-26

The seminars are taking place on Zoom every second Tuesday at 11 am (all times in US Eastern Time Zone).

The Seminar Series on String Phenomenology is currently in session!

Nov 25th 2025: 

• 11:00: "Extended moduli spaces in 4d N=1 Quantum Gravity theories", Gonzalo F Casas , IFT UAM-CSIC

Abstract: We study non-perturbative transitions in the extended moduli spaces of 4d N=1 theories of quantum gravity arising from string theory compactifications. For these theories, the perturbative moduli spaces are well understood. We argue, however, that this perturbative perspective is incomplete since at the non-perturbative level the moduli space gets extended if the theory contains subsectors featuring enhanced supersymmetry. This moduli space extension is well known in 6d N=(1,0) theories arising from string theory. Here, we investigate the 4d N=1 cousins of these non-perturbative, moduli space-augmenting transitions. The main focus lies on supersymmetry enhancements in the Kähler sector of F-theory compactifications signaled by a curve not intersected by 7-planes. In these setups, identifying the additional degrees of freedom responsible for the enhancement of the supersymmetry, we demonstrate how the moduli space is augmented at the non-perturbative level.

• 11:30: "TBA",  Dongming He, Vrije U

Abstract: TBA