Axionic Band Structure of the Cosmological Constant
arXiv:1510.06388 · doi:10.1103/PhysRevD.93.023522
Abstract
We argue that theories with multiple axions generically contain a large number of vacua that can account for the smallness of the cosmological constant. In a theory with N axions, the dominant instantons with charges Q determine the discrete symmetry of vacua. Subleading instantons break the leading periodicity and lift the vacuum degeneracy. For generic integer charges the number of distinct vacua is given by |det(Q)|~exp(N). Our construction motivates the existence of a landscape with a vast number of vacua in a large class of four-dimensional effective theories.
5 pages, 1 figure
References in corpus (10)
- Flux Compactification
- TASI Lectures on the Cosmological Constant
- Euclidean Wormholes in String Theory
- Predicting the Cosmological Constant from the Causal Entropic Principle
- Predicting the cosmological constant with the scale-factor cutoff measure
- Natural Inflation in Supergravity and Beyond
- Landscape Predictions from Cosmological Vacuum Selection
- Heavy Tails in Calabi-Yau Moduli Spaces
- Volume Weighted Measures of Eternal Inflation in the Bousso-Polchinski Landscape
- Inflation After False Vacuum Decay: New Evidence from BICEP2