Large scale structure forecast constraints on particle production during inflation
- Oxford Astrophysics, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH (United Kingdom)
Bursts of particle production during inflation provide a well-motivated mechanism for creating bumplike features in the primordial power spectrum. Current data constrain these features to be less than about 5% the size of the featureless primordial power spectrum at wave numbers of about 0.1h Mpc{sup -1}. We forecast that the Planck cosmic microwave background experiment will be able to strengthen this constraint to the 0.5% level. We also predict that adding data from a square kilometer array galaxy redshift survey would improve the constraint to about the 0.1% level. For features at larger wave numbers, Planck will be limited by Silk damping and foregrounds, while the square kilometer array will be limited by nonlinear effects. We forecast, for a cosmic inflation probe galaxy redshift survey, that similar constraints can be achieved up to about a wave number of 1.0h Mpc{sup -1}.
- OSTI ID:
- 21502544
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 10; Other Information: DOI: 10.1103/PhysRevD.83.103501; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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