Constraining hybrid natural inflation with recent CMB data
نویسندگان
چکیده
منابع مشابه
Constraining hybrid inflation models with WMAP three-year results
We reconsider the original model of quadratic hybrid inflation in light of the WMAP three-year results and study the possibility of obtaining a spectral index of primordial density perturbations, ns, smaller than one from this model. The original hybrid inflation model naturally predicts ns ≥ 1 in the false vacuum dominated regime but it is also possible to have ns < 1 when the quadratic term d...
متن کاملSlow-roll Inflation and Cmb Anisotropy Data
We emphasize that the estimation of cosmological parameters from CMB anisotropy data, such as the recent high resolution maps from BOOMERanG and MAXIMA-1, requires assumptions on the primordial spectra. The latter are predicted from inflation. The physically best motivated scenario is slow-roll inflation. However, very often the unphysical power-law inflation scenario is (implicitly) assumed in...
متن کاملConstraining Cosmological Parameters with Cmb Measurements
The current enthusiam to measure fluctuations in the CMB power spectrum at angular scales between 0.1 and 1 is largely motivated by the expectation that CMB determinations of cosmological parameters will be of unprecedented precision. In such circumstances it is important to estimate what we can already say about the cosmological parameters. In two recent papers (Lineweaver et al. 1997a & 1997b...
متن کاملFitting CMB data with cosmic strings and inflation
This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and all moral rights to the version of the paper presented here belong to the individual ...
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: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/02/039