Freak observers and the measure of the multiverse

Published 26 January 2007 Published under licence by IOP Publishing Ltd
, , Citation Alexander Vilenkin JHEP01(2007)092 DOI 10.1088/1126-6708/2007/01/092

1126-6708/2007/01/092

Abstract

I suggest that the factor pj in the pocket-based measure of the multiverse, Pj = pj fj, should be interpreted as accounting for equilibrium de Sitter vacuum fluctuations, while the selection factor fj accounts for the number of observers that were formed due to non-equilibrium processes resulting from such fluctuations. I show that this formulation does not suffer from the problem of freak observers (also known as Boltzmann brains).

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10.1088/1126-6708/2007/01/092