Gauge Five Brane Dynamics And Small Instanton Transitions In Heterotic Models

Details Gauge Five Brane Dynamics And Small Instanton Transitions In Heterotic Models Gauge Five Brane Dynamics And Small Instanton Transitions In Heterotic Models

2003-12-10

arxiv.org/abs/hep-th/0312111v1

Phys.Rev. D69 (2004) 126003

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 3 figures

Scientific paper

10.1103/PhysRevD.69.126003

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.

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