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Local Observation in Eternal Inflation

J. Hartle S.W. Hawking 1 T. Hertog 2
2 APC - THEORIE
APC (UMR_7164) - AstroParticule et Cosmologie, Institut für theoretische Physik
Abstract : We consider landscape models that admit several regions where the conditions for eternal inflation hold. It is shown that one can use the no-boundary wave function to calculate small departures from homogeneity within our past light cone despite the possibility of much larger fluctuations on super horizon scales. The dominant contribution comes from the history exiting eternal inflation at the lowest value of the potential. In a class of landscape models this predicts a tensor to scalar ratio of about 10%. In this way the no-boundary wave function defines a measure for the prediction of local cosmological observations.
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Submitted on : Thursday, August 2, 2012 - 2:53:13 PM
Last modification on : Monday, October 26, 2020 - 2:50:03 PM

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J. Hartle, S.W. Hawking, T. Hertog. Local Observation in Eternal Inflation. Physical Review Letters, American Physical Society, 2011, 106, pp.141302. ⟨10.1103/PhysRevLett.106.141302⟩. ⟨in2p3-00722564⟩

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