6533b834fe1ef96bd129ce03
RESEARCH PRODUCT
The present and future of the most favoured inflationary models after $Planck$ 2015
Olga MenaMiguel EscuderoElena GiusarmaLotfi BoubekeurLotfi BoubekeurHéctor Ramírezsubject
PhysicsParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)010308 nuclear & particles physicsCosmic microwave backgroundSpectral densityFOS: Physical sciencesAstronomy and AstrophysicsPlanck temperatureAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencessymbols.namesake0103 physical sciencessymbolsPlanck010303 astronomy & astrophysicsAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
The value of the tensor-to-scalar ratio $r$ in the region allowed by the latest $Planck$ 2015 measurements can be associated to a large variety of inflationary models. We discuss here the potential of future Cosmic Microwave Background cosmological observations in disentangling among the possible theoretical scenarios allowed by our analyses of current $Planck$ temperature and polarization data. Rather than focusing only on $r$, we focus as well on the running of the primordial power spectrum, $\alpha_s$ and the running of thereof, $\beta_s$. Our Fisher matrix method benefits from a detailed and realistic appraisal of the expected foregrounds. Future cosmological probes, as the COrE mission, may be able to reach an unprecedented accuracy in the extraction of $\beta_s$ and rule out the most favoured inflationary models.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-09-17 |