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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
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Natural inflation on a steep potential with classical non-Abelian gauge fields.
We propose a model for inflation consisting of an axionic scalar field coupled to a set of three non-Abelian gauge fields. Our model's novel requirement is that the gauge fields begin inflation withExpand
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Neutrinos help reconcile Planck measurements with the local universe.
Current measurements of the low and high redshift Universe are in tension if we restrict ourselves to the standard six-parameter model of flat ΛCDM. This tension has two parts. First, the PlanckExpand
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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 giveExpand
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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 SurveyExpand
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Scaling of multitension cosmic superstring networks
Brane inflation in superstring theory ends when branes collide, initiating the hot big bang. Cosmic superstrings are produced during the brane collision. The cosmic superstrings produced in aExpand
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Equilateral non-Gaussianity from multifield dynamics
The distinctive features of single field inflationary models with nonminimal kinetic terms, like Dirac-Born-Infeld and k inflation, can be captured by more familiar multiple-field inflationaryExpand
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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 sterileExpand
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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 otherExpand
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N-body simulations of DGP and degravitation theories
We perform N-body simulations of theories with infinite-volume extra dimensions, such as the Dvali-Gabadadze-Porrati model and its higher-dimensional generalizations, where 4D gravity is mediated byExpand
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