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Cosmological perturbations in the bulk and on the brane
Helen A. Bridgman, Karim A. Malik, David Wands
We study cosmological perturbations in a brane-world scenario where the matter fields live on a four-dimensional brane and gravity propagates in the five-dimensional bulk. We prese…
Correlated perturbations from inflation and the cosmic microwave background
Luca Amendola, Christopher Gordon, David Wands +1
We compare the latest cosmic microwave background data with theoretical predictions including correlated adiabatic and CDM isocurvature perturbations with a simple power-law depend…
Enhancement of superhorizon scale inflationary curvature perturbations
Samuel M Leach, Misao Sasaki, David Wands +1
We show that there exists a simple mechanism which can enhance the amplitude of curvature perturbations on superhorizon scales during inflation, relative to their amplitude at hori…