Puzzles on the Duality between Heterotic and Type IIA Strings

Abstract

We discuss the possibility of the extension of the duality between the webs of heterotic string and the type IIA string to Calabi-Yau 3-folds with another K3 fiber by comparing the dual polyhedron of Calabi-Yau 3-folds given by Candelas, Perevalov and Rajesh.

Latex, 12 pages, Replacement: solution to puzzles was added, i.e., double K3 fibrations

References in corpus (3)

• F-theory, SO(32) and Toric Geometry
• Enhanced Gauge Symmetry in Type II and F-Theory Compactifications: Dynkin Diagrams from Polyhedra
• Comments on A,B,C Chains of Heterotic and Type II Vacua

Cited by in corpus (1)

• On Black Attractors in 8D and Heterotic/Type IIA Duality