Tuning, Ergodicity, Equilibrium and Cosmology - INSPIRE

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Tuning, Ergodicity, Equilibrium and Cosmology

Andreas Albrecht
(
- UC, Davis
)

Jan 28, 2014

11 pages

Published in:

Phys.Rev.D 91 (2015) 10, 103510

Published: May 13, 2015

e-Print:

1401.7309 [hep-th]

DOI:

10.1103/PhysRevD.91.103510

View in:

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Abstract: (APS)

I explore the possibility that the cosmos is fundamentally an equilibrium system and review the attractive features of such theories. Equilibrium cosmologies are commonly thought to fail due to the “Boltzmann brain” problem. I show that it is possible to evade the Boltzmann brain problem if there is a suitable coarse-grained relationship between the fundamental degrees of freedom and the cosmological observables. I make my main points with simple toy models and then review the de Sitter equilibrium model as an illustration.

Note:

11 pages including 2 figures and 4 tables

98.80.-k
cosmological model
Boltzmann brain
de Sitter
toy model
equilibrium
fluctuation

References(57)

Figures(2)

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