The History of Inflation from Microwave Background Polarimetry and Laser Interferometry
arXiv:1409.3195 · doi:10.1103/PhysRevD.91.103529
Abstract
A period of inflation in the early universe produces a nearly scale-invariant spectrum of gravitational waves over a huge range in wavelength. If the amplitude of this gravitational wave background is large enough to be detectable with microwave background polarization measurements, it will also be detectable directly with a space-based laser interferometer. Using a Monte Carlo sampling of inflation models, we demonstrate that the combination of these two measurements will strongly constrain the expansion history during inflation and the physical mechanism driving it.
arXiv comment8 pages, 4 figures, accepted for publication in PRD, minor changes post referee report
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