Gauge five-brane dynamics and small instanton transitions in heterotic models

Journal article

We present the first examples of cosmological solutions to four-dimensional heterotic models which include an evolving bundle modulus. The particular bundle modulus we consider corresponds to the width of a gauge five brane. As such our solutions can be used to describe the evolution in one of these models after a small instanton transition. We find that certain properties are generic to these solutions, regardless of initial conditions. This enables us to make some definite statements about the dynamics subsequent to a small instanton transition despite the fact that we cannot microscopically describe the process itself. We also show that an effective description of the small instanton transition by a continuous matching of fields and their first derivatives is precluded by the form of the respective low-energy theories before and after the transition. ©2004 The American Physical Society.

Authors: Gray, J; Lukas, A; Probert, G

• Journal: Physical Review D
• Volume: 69
• Issue: 12
• Publication date: 2004-01-01
• DOI: 10.1103/PhysRevD.69.126003
• ISSN: 0556-2821
• Language: English