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arXiv · hep-th/0605015

Eternal observers and bubble abundances in the landscape

Vitaly Vanchurin·Alexander Vilenkin
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Abstract

We study a class of ``landscape'' models in which all vacua have positive energy density, so that inflation never ends and bubbles of different vacua are endlessly ``recycled''. In such models, each geodesic observer passes through an infinite sequence of bubbles, visiting all possible kinds of vacua. The bubble abundance $p_j$ can then be defined as the frequency at which bubbles of type $j$ are visited along the worldline of an observer. We compare this definition with the recently proposed general prescription for $p_j$ and show that they give identical results.

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Vitaly Vanchurin, Alexander Vilenkin. 2006-05-01. Eternal observers and bubble abundances in the landscape. https://doi.org/10.1103/physrevd.74.043520

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