Runaway dilatonic domain walls

Details Runaway dilatonic domain walls Runaway dilatonic domain walls

2009-11-23

arxiv.org/abs/0911.4342v2

Phys.Rev.D81:043527,2010

Physics

High Energy Physics

High Energy Physics - Theory

29 pages with 19 figures. Replaced to match published version

Scientific paper

10.1103/PhysRevD.81.043527

We explore the stability of domain wall and bubble solutions in theories with compact extra dimensions. The energy density stored inside of the wall can destabilize the volume modulus of a compactification, leading to solutions containing either a timelike singularity or a region where space decompactifies, depending on the metric ansatz. We determine the structure of such solutions both analytically and using numerical simulations, and analyze how they arise in compactifications of Einstein--Maxwell theory and Type IIB string theory. The existence of instabilities has important implications for the formation of networks of topological defects and the population of vacua during eternal inflation.

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