Cosmological constraints on general, single field inflation

Details Cosmological constraints on general, single field inflation Cosmological constraints on general, single field inflation

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..apr.t8002a&link_type=abstract

American Physical Society, 2009 APS April Meeting, May 2-5, 2009, abstract #T8.002

Computer Science

Sound

Scientific paper

Inflation is now an accepted paradigm in standard cosmology. It lacks, however, a firm physical theory, with many possible theoretical origins beyond the simplest, canonical, slow-roll inflation, including Dirac-Born-Infeld inflation and k-inflation. We discuss how a hierarchy of Hubble flow parameters, extended to include the evolution of the inflationary sound speed, can be applied to compare a general, single field inflationary action with cosmological observational data. By integrating the full flow and perturbation equations to obtain precise scalar and tensor primordial power spectra, we use a Monte-Carlo-Markov-Chain approach to constrain the properties of general, single field inflation by comparing with recent cosmic microwave background and large-scale structure observations.

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