(12.12.) Towards a String Realization of the Dark Dimension via T-folds
Guoen Nian (Utrecht U.)
12.12.2024 at 16:30
The Dark Dimension Scenario offers a compelling connection between Swampland conjectures and observations in our universe. This scenario indicates the existence of a single mesoscopic extra dimension and imposes specific constraints on the scalar potential. However, its realization within string theory presents significant challenges. In this talk, we explore the possibility of realizing the Dark Dimension Scenario through compactifications on a $T^5 \times S^1$ T-fold. By employing the Scherk-Schwarz reduction from 5D to 4D, along with duality twists incorporating both elliptic and parabolic conjugacy classes from subgroups of the $T^5$ T-duality group, we achieve stabilization of the $T^5$ volume and several other moduli. Our analysis reveals that there could be more than one asymptotically runaway direction, one of which aligns with the Scherk-Schwarz radion, naturally serving as the proposed dark dimension. The talk will conclude with a discussion of the remaining challenges and future research directions on this topic.