Holographic probabilities in eternal inflation
arXiv:hep-th/0605263 · doi:10.1103/PhysRevLett.97.191302
Abstract
In the global description of eternal inflation, probabilities for vacua are notoriously ambiguous. The local point of view is preferred by holography and naturally picks out a simple probability measure. It is insensitive to large expansion factors or lifetimes, and so resolves a recently noted paradox. Any cosmological measure must be complemented with the probability for observers to emerge in a given vacuum. In lieu of anthropic criteria, I propose to estimate this by the entropy that can be produced in a local patch. This allows for prior-free predictions.
5 pages, 3 figures. v4: published version, misprints corrected (mu -> eta)
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