Abstract
We show that the Planck 2015 and BICEP2/KECK measurements of the cosmic microwave background (CMB) anisotropies provide together an information gain of 0.82±0.13 bits on the reheating history over all slow-roll single-field models of inflation. This corresponds to a 40% improvement compared to the Planck 2013 constraints on the reheating. Our method relies on an exhaustive CMB data analysis performed over nearly 200 models of inflation to derive the Kullback-Leibler entropy between the prior and the fully marginalized posterior of the reheating parameter. This number is a weighted average by the Bayesian evidence of each model to explain the data thereby ensuring its fairness and robustness.
Original language | English |
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Article number | 103532 |
Number of pages | 6 |
Journal | Physical Review D |
Volume | 93 |
Issue number | 10 |
DOIs | |
Publication status | Published - 26 May 2016 |
Keywords
- RCUK
- STFC
- ST/ K00090X/1
- ST/L005573/1