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CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
Daniel Baumann, Mark G. Jackson, Peter Adshead +56
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 measu…
Cosmological perturbations through the big bang
David Wands
Several scenarios have been proposed in which primordial perturbations could originate from quantum vacuum fluctuations in a phase corresponding to a collapse phase (in an Einstein…
Cosmological perturbations
Karim A. Malik, David Wands
We review the study of inhomogeneous perturbations about a homogeneous and isotropic background cosmology. We adopt a coordinate based approach, but give geometrical interpretation…
Non-linear isocurvature perturbations and non-Gaussianities
David Langlois, Filippo Vernizzi, David Wands
We study non-linear primordial adiabatic and isocurvature perturbations and their non-Gaussianity. After giving a general formulation in the context of an extended delta N-formalis…
Primordial non-gaussianity from multiple curvaton decay
Jussi Valiviita, Hooshyar Assadullahi, David Wands
We study a model where two scalar fields, that are subdominant during inflation, decay into radiation some time after inflation has ended but before primordial nucleosynthesis. Per…
Brane-world inflation: slow-roll corrections to the spectral index
Kazuya Koyama, Andrew Mennim, David Wands
We quantify the slow-roll corrections to primordial density perturbations arising from inflation driven by a four-dimensional scalar field with a monomial potential in a five-dimen…