Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Astrostatistics; CLCC Director



+44 (0)20 7594 7793r.trotta Website CV




Mrs Sheila Ekudo +44 (0)20 7594 2086




1009Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Martin, J and Ringeval, C and Trotta, R and Vennin, V},
doi = {03/039},
journal = {Journal of Cosmology and Astroparticle Physics},
title = {The best inflationary models after Planck},
url = {},
volume = {2014},
year = {2014}

RIS format (EndNote, RefMan)

AB - We compute the Bayesian evidence and complexity of 193 slow-roll single-field models of inflation using the Planck 2013 Cosmic Microwave Background data, with the aim of establishing which models are favoured from a Bayesian perspective. Our calculations employ a new numerical pipeline interfacing an inflationary effective likelihood with the slow-roll library ASPIC and the nested sampling algorithm MultiNest. The models considered represent a complete and systematic scan of the entire landscape of inflationary scenarios proposed so far. Our analysis singles out the most probable models (from an Occam's razor point of view) that are compatible with Planck data, while ruling out with very strong evidence 34% of the models considered. We identify 26% of the models that are favoured by the Bayesian evidence, corresponding to 15 different potential shapes. If the Bayesian complexity is included in the analysis, only 9% of the models are preferred, corresponding to only 9 different potential shapes. These shapes are all of the plateau type.
AU - Martin,J
AU - Ringeval,C
AU - Trotta,R
AU - Vennin,V
DO - 03/039
PY - 2014///
SN - 1475-7516
TI - The best inflationary models after Planck
T2 - Journal of Cosmology and Astroparticle Physics
UR -
UR -
VL - 2014
ER -