Mathematics – Logic
Scientific paper
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.
Giusarma Elena
Lattanzi Massimiliano
Melchiorri Alessandro
Pandolfi Stefania
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