Primordial Features as Evidence for Inflation
Apr, 2011Citations per year
Abstract: (arXiv)
In the primordial universe, fields with mass much larger than the mass-scale of the event-horizon (such as the Hubble parameter in inflation) exist ubiquitously, and can be excited from time to time and oscillate quickly around their minima. These excitations can induce specific patterns in density perturbations, which record the time dependence of the scale factor of the primordial universe, thus provide direct evidence for the inflation paradigm or its alternatives. Such effects are conventionally averaged out in theoretical and data analyses, but can be accessible for experiments targeting on density perturbations with high multipoles.- density: perturbation
- inflation
- Hubble constant
- excited state
- particle: heavy
- oscillation
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