F-Theory on Spin(7) Manifolds: Weak-Coupling Limit

Understand

F-theory on appropriately fibered Spin(7) holonomy manifolds is defined to arise as the dual of M-theory on the same space in the limit of a shrinking fiber.

• A class of Spin(7) orbifolds can be constructed as quotients of elliptically fibered Calabi-Yau fourfolds by an anti-holomorphic involution.
• The F-theory dual then exhibits one macroscopic dimension that has the topology of an interval.
• In this work we study the weak-coupling limit of a subclass of such constructions and identify the objects that arise in this limit.