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Observable signatures of anisotropic bubble nucleation



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Scientific Areas: 
PIRSA Number: 
11070009

Abstract

Our universe may have formed via bubble nucleation in an eternally-inflating background. Furthermore, the background may have a compact dimension---the modulus of which tunnels out of a metastable minimum during bubble nucleation---which subsequently grows to become one of our three large spatial dimensions. We discuss some potential observational signatures of this scenario.