Bayesian Analysis of Inflation II: Model Selection and Constraints on Reheating

@article{Easther2012BayesianAO,
  title={Bayesian Analysis of Inflation II: Model Selection and Constraints on Reheating},
  author={Richard Easther and Hiranya V. Peiris},
  journal={Physical Review D},
  year={2012},
  volume={85},
  pages={103533}
}
We discuss the model selection problem for inflationary cosmology. We couple ModeCode, a publicly-available numerical solver for the primordial perturbation spectra, to the nested sampler MultiNest, in order to efficiently compute Bayesian evidence. Particular attention is paid to the specification of physically realistic priors, including the parametrization of the post-inflationary expansion and associated thermalization scale. It is confirmed that while present-day data tightly constrains… 

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