Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2008/01/002
Keywords
CMBR polarization theory; inflation; physics of the early universe; power spectrum
Ask authors/readers for more resources
We show that if inflation lasts just longer than the required 60 or so e-folds (N), both scalar and tensor contributions to the cosmic microwave background power spectra are expected to show a cut-off. However the behaviour of the scalar-to-tensor ratio on large scales depends on whether inflation is preceded by a kinetic dominated (KD) or radiation dominated stage. Future experiments may be able to distinguish between the two behaviours and thus shed light on the nature of the low-l cut-off. In particular if the cut-off is due to a KD stage the ratio is expected to grow on large scales. If observed, this would challenge our current understanding of the overall probability of inflation lasting for N greater than 60.
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