Inflation with primordial broken power law spectrum as an alternative to the concordance cosmological model

Details Inflation with primordial broken power law spectrum as an alternative to the concordance cosmological model Inflation with primordial broken power law spectrum as an alternative to the concordance cosmological model

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010phrvd..81j3007p&link_type=abstract

Physical Review D, vol. 81, Issue 10, id. 103007

Mathematics

Logic

Dark Energy, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We consider cosmological models with a non-scale-invariant spectrum of primordial perturbations and assess whether they represent a viable alternative to the concordance ΛCDM model. We find that in the framework of a model selection analysis, the WMAP and 2dF data do not provide any conclusive evidence in favor of one or the other kind of model. However, when a marginalization over the entire space of nuisance parameters is performed, models with a modified primordial spectrum and ΩΛ=0 are strongly disfavored.

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