Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2012/01/038
Keywords
inflation; alternatives to inflation; cosmological perturbation theory
Funding
- Stephen Hawking Advanced Fellowship
- STFC [ST/I002006/1, ST/F002998/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002998/1, ST/I002006/1] Funding Source: researchfish
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available