New constraints on inflation from the CMB

Details New constraints on inflation from the CMB New constraints on inflation from the CMB

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..586...43k&link_type=abstract

RELATIVISTIC ASTROPHYSICS: 20th Texas Symposium. AIP Conference Proceedings, Volume 586, pp. 43-48 (2001).

Astronomy and Astrophysics

Astrophysics

Particle-Theory And Field-Theory Models Of The Early Universe, Background Radiations

Scientific paper

The recent data from the Boomerang and MAXIMA-1 balloon flights have marked the beginning of the precision era of Cosmic Microwave Background anisotropy (CMB) measurements. We discuss the observational constraints from the current CMB anisotropy measurements on the simplest inflation models, characterized by a single scalar field φ, in the parameter space consisting of scalar spectral index nS and tensor/scalar ratio r. The data are consistent with the simplest assumption of a scale invariant power spectrum, but the specific error contours in the r-n plane depend on prior assumptions, particularly the baryon density of the universe and the reionization history. Models with significant ``red'' tilt (n<1) and appreciable tensor fluctuations are disfavored in all cases. .

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