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CMBPol Mission Concept Study Probing Ination with CMB Polarization
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of ination. We focus on the prospects for using CMB measurements
Natural inflation on a steep potential with classical non-Abelian gauge fields.
TLDR
It is found that inflation continues until the axionic potential vanishes, and for sub-Planckian axion decay constants vanishingly small tensor to scalar ratios are predicted, a direct consequence of the Lyth bound.
Perturbations in Chromo-Natural Inflation
A bstractChromo-Natural Inflation is the first worked example of a model of inflation in which slow-roll inflation is achieved by “magnetic drift” as opposed to Hubble friction. In this work, we give
Neutrinos help reconcile Planck measurements with the local universe.
TLDR
Current measurements of the low and high redshift Universe are in tension if the authors restrict ourselves to the standard six-parameter model of flat ΛCDM, and an eV-scale sterile neutrino mass--of interest for short baseline and reactor anomalies--is well within the allowed range.
Probing inflation with CMB polarization
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measurements to
Neutrinos help reconcile Planck measurements with both the early and local Universe
In light of the recent BICEP2 B-mode polarization detection, which implies a large inflationary tensor-to-scalar ratio r_{0.05}=0.2^{+0.07}_{-0.05}, we re-examine the evidence for an extra sterile
Scaling of multitension cosmic superstring networks
TLDR
This work extends the velocity-dependent one-scale network evolution equations for Abelian Higgs cosmic strings to allow a spectrum of string tensions, and constructs a coupled (infinite) set of equations for strings that interact through binding and self-interactions to apply to a network of (p,q) superstrings.
Cosmic String Constraints From WMAP and the South Pole Telescope Data
The predictions of the inflationary LCDM paradigm match today's high-precision measurements of the cosmic microwave background anisotropy extremely well. The same data put tight limits on other
Observational Constraints on Cosmic String Production During Brane Inflation
Overall, brane inflation is compatible with the recent analysis of the Wilkinson microwave anisotropy probe ~WMAP! data. Here we explore the constraints of WMAP and the 2dF Galaxy Redshift Survey
Gauge fields and inflation: Chiral gravitational waves, fluctuations, and the Lyth bound
Models of inflation involving non-Abelian gauge field backgrounds can produce gravitational waves at an observable level with a preferred handedness. This asymmetry comes about because the
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