Volume Weighting in the No Boundary Proposal

Details Volume Weighting in the No Boundary Proposal Volume Weighting in the No Boundary Proposal

2007-10-10

arxiv.org/abs/0710.2029v1

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 1 figure, typeset text from recent lecture

Scientific paper

It has been suggested that the no boundary proposal would predict little or no slow roll inflation leading to an empty deSitter universe. However it is argued that the probability for the whole universe should be multiplied by a zero mode factor $e^{3N}$ which counts the number of Hubble volumes in the universe. This volume weighting is similar to that in eternal inflation but derived in a gauge invariant manner. It predicts that inflation began at a saddle point in the potential and that the universe was always in the semi-classical regime.

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