Volume Weighted Measures of Eternal Inflation in the Bousso-Polchinski Landscape

Abstract

We consider the cosmological dynamics associated with volume weighted measures of eternal inflation, in the Bousso-Polchinski model of the string theory landscape. We find that this measure predicts that observers are most likely to find themselves in low energy vacua with one flux considerably larger than the rest. Furthermore, it allows for a satisfactory anthropic explanation of the cosmological constant problem by producing a smooth, and approximately constant, distribution of potentially observable values of Lambda. The low energy vacua selected by this measure are often short lived. If we require anthropically acceptable vacua to have a minimum life-time of 10 billion years, then for reasonable parameters a typical observer should expect their vacuum to have a life-time of approximately 12 billion years. This prediction is model dependent, but may point toward a solution to the coincidence problem of cosmology.

arXiv comment35 pages, 8 figures

References in corpus (11)

• de Sitter Vacua in String Theory
• Quantization of Four-form Fluxes and Dynamical Neutralization of the Cosmological Constant
• Flux Compactification
• Probabilities in the inflationary multiverse
• Sinks in the Landscape, Boltzmann Brains, and the Cosmological Constant Problem
• Holographic probabilities in eternal inflation
• Recycling universe
• Probabilities in the Bousso-Polchinski multiverse
• Landscape Predictions from Cosmological Vacuum Selection
• Islands in the landscape
• Coincident brane nucleation and the neutralization of Λ

Cited by in corpus (28)

• TASI Lectures on the Cosmological Constant
• Predicting the cosmological constant with the scale-factor cutoff measure
• Boltzmann babies in the proper time measure
• Prediction and explanation in the multiverse
• Stationary Measure in the Multiverse
• The Born Rule Dies
• Cosmological Measures without Volume Weighting
• Global-Local Duality in Eternal Inflation
• Predictions of the causal entropic principle for environmental conditions of the universe
• Giant Leaps and Minimal Branes in Multi-Dimensional Flux Landscapes
• Negative vacuum energy densities and the causal diamond measure
• Probability of Slowroll Inflation in the Multiverse
• Disorder on the landscape
• A Finite Measure for the Initial Conditions of Inflation
• Inflation Expels Runaways
• Reheating-volume measure for random-walk inflation
• Axionic Band Structure of the Cosmological Constant
• Anthropic prediction for a large multi-jump landscape
• Reheating-volume measure in the landscape
• Flux Compactifications on $(S_2{)}^N$
• Agnesi Weighting for the Measure Problem of Cosmology
• Tensor modes on the string theory landscape
• Initial Conditions of Inflation in a Bianchi I Universe
• Applications of an exact counting formula in the Bousso-Polchinski Landscape
• Surviving in a Metastable de Sitter Space-Time
• Black holes and up-tunneling suppress Boltzmann brains
• Symmetric Points in the Landscape as Cosmological Attractors
• Some physical consequences of an exact vacua distribution in the Bousso-Polchinski Landscape