Chain inflation and the imprint of fundamental physics in the CMBR
arXiv:0809.2707 · doi:10.1088/1475-7516/2009/03/007
Abstract
In this work we investigate characteristic modifications of the spectrum of cosmological perturbations and the spectral index due to chain inflation. We find two types of effects. First, modifications of the spectral index depending on interactions between radiation and the vacuum, and on features of the effective vacuum potential of the underlying fundamental theory. Second, a modulation of the spectrum signalling new physics due to bubble nucleation. This effect is similar to those of transplanckian physics. Measurements of such signatures could provide a wealth of information on the fundamental physics at the basis of inflation.
16 pages
References in corpus (5)
- Simplified Chain Inflation
- The Cosmological Constant Problem and Inflation in the String Landscape
- Chain Inflation via Rapid Tunneling in the Landscape
- Deforming, revolving and resolving - New paths in the string theory landscape
- Observing trans-Planckian ripples in the primordial power spectrum with future large scale structure probes