How Robust is Inflation to Inhomogenous Initial Conditions?

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• Eugene Lim (KCL)
• Monday 20 February 2017, 13:00-14:00
• CMS, Pav. B, CTC Common Room (B1.19) [Potter Room].

If you have a question about this talk, please contact Tobias Baldauf.

Inflation solved the cosmic homogeneity problem. But does Inflation itself require a homogenous patch to begin? We investigate this problem in full 3+1 numerical relativity. We show that while large field inflation is very robust to inhomogeneities, small field inflation fails in the presence of sub-dominant gradients. We also show that, for large field inflation, attempts to stop inflation by forming a black hole spacetime will fail as long as the initial hyperslice is roughly flat.

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