Post-inflation increase of the cosmological tensor-to-scalar perturbation ratio
Journal Article
·
· Modern Physics Letters A
We investigate the possibility that the amplitude of scalar density perturbations may be damped after inflation. This would imply that CMB anisotropies do not uniquely fix the amplitude of the perturbations generated during inflation and that the present tensor-to-scalar ratio might be larger than produced in inflation, increasing the prospects of detection of primordial gravitational radiation. It turns out, however, that the damping of density perturbations is hard to achieve.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 15020169
- Report Number(s):
- FERMILAB-PUB-05-335-A; MPLAEQ; arXiv eprint number astro-ph/0507573; TRN: US200612%%41
- Journal Information:
- Modern Physics Letters A, Vol. 20; ISSN 0217-7323
- Country of Publication:
- United States
- Language:
- English
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