Codimension-Three Bundle Singularities in F-Theory
Philip Candelas, Duiliu-Emanuel Diaconescu, Bogdan Florea, David R., Morrison, and Govindan Rajesh
TL;DR
This paper investigates codimension-three bundle singularities in F-theory, revealing new nonperturbative effects in heterotic string vacua and their implications for four-dimensional physics.
Contribution
It introduces a detailed analysis of pointlike bundle singularities in codimension three and their role in nonperturbative phenomena in string theory.
Findings
Identification of new light solitonic states in 4D physics
Connection between bundle degenerations and F-theory duals
Description of bundle transitions in E7 to E6 Higgsing
Abstract
We study new nonperturbative phenomena in N=1 heterotic string vacua corresponding to pointlike bundle singularities in codimension three. These degenerations result in new four-dimensional infrared physics characterized by light solitonic states whose origin is explained in the dual F-theory model. We also show that such phenomena appear generically in Higgsing and describe in detail the corresponding bundle transition.
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