Cosmic microwave background observables of small field models of inflation
نویسندگان
چکیده
منابع مشابه
Cosmic microwave background probes models of inflation.
Inflation creates both scalar (density) and tensor (gravity wave) metric perturbations. We find that the tensor mode contribution to the CMB anisotropy on large-angular scales can only exceed that of the scalar mode in models where the spectrum of perturbations deviates significantly from scale invariance (e.g., extended and power-law inflation models and extreme versions of chaotic inflation)....
متن کاملCosmic Microwave Background Tests of Inflation
Inflation provides a unified paradigm for understanding the isotropy of the cosmic microwave background (CMB), the flatness problem, and the origin of large-scale structure. Although the physics responsible for inflation is not yet well understood, slow-roll inflation generically makes several predictions: a flat Universe, primordial adiabatic density perturbations, and a stochastic gravity-wav...
متن کاملCosmic microwave background bispectrum and inflation
We derive an expression for the non-Gaussian cosmic microwave background ~CMB! statistic I l 3 defined recently by Ferreira, Magueijo, and Górski in terms of the slow-roll-inflation parameters e and h . This result shows that a nonzero value of I l 3 in COBE would rule out single-field slow-roll inflation. A sharp change in the slope of the inflaton potential could increase the predicted value ...
متن کاملThe Cosmic Microwave Background Bispectrum and Inflation
We derive an expression for the non-Gaussian cosmic-microwave-background (CMB) statistic I3 l defined recently by Ferreira, Magueijo, and Górski in terms of the slow-roll-inflation parameters ǫ and η. This result shows that a nonzero value of I3 l in COBE would rule out single-field slow-roll inflation. A sharp change in the slope of the inflaton potential could increase the predicted value of ...
متن کاملConstraining Inflation with Cosmic Microwave Background Polarization
Observations of the polarization of the cosmic microwave backround (CMB) have the potential to place much tighter constraints on cosmological parameters than observations of the fluctuations in temperature alone. We discuss using CMB polarization to constrain parameters relevant for distinguishing among popular models for cosmological inflation, using the MAP and Planck satellite missions as ex...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2010
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2010/09/007