Brane Decay and Defect Formation

Details Brane Decay and Defect Formation Brane Decay and Defect Formation

2007-08-22

arxiv.org/abs/0708.3094v2

AIPConf.Proc.957:353-356,2007

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 3 figures. Contribution to the proceedings of PASCOS-07, 2-7 July 2007, Imperial College, London

Scientific paper

10.1063/1.2823800

Topological defects are generically expected to form in models of brane inflation. Brane-anti-brane annihilation provides a way to gracefully end inflation, and the dynamics of the tachyon field results in defect formation. The formation of defects has been studied mainly from the brane world-volume point of view, but the defects are themselves lower-dimensional branes, and as a result they couple to bulk fields. To investigate the impact of bulk fields on brane defect formation, we construct a toy model that captures the essential features of the tachyon condensation with bulk fields. In this toy model, we study the structure of defects and simulate their formation and evolution on a lattice. We find that while bulk fields do not have a significant effect on defect formation, they drastically influence the subsequent evolution of the defects, as they re-introduce long-range interactions between them.

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