Journal
PHYSICAL REVIEW D
Volume 101, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.103502
Keywords
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Funding
- NSERC
- Canada Research Chair program
- DOE [DE-SC0017848]
- NSF [PHY-1719924]
- Simons Foundation [602883]
- U.S. Department of Energy (DOE) [DE-SC0017848] Funding Source: U.S. Department of Energy (DOE)
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We study the implications of the recently proposed Trans-Planckian censorship conjecture (TCC) for early Universe cosmology and in particular inflationary cosmology. The TCC leads to the conclusion that if we want inflationary cosmology to provide a successful scenario for cosmological structure formation, the energy scale of inflation has to be lower than 10(9) GeV. Demanding the correct amplitude of the cosmological perturbations then forces the generalized slow-roll parameter e of the model to be very small (<10(-31)). This leads to the prediction of a negligible amplitude of primordial gravitational waves. For slowroll inflation models, it also leads to severe fine-tuning of initial conditions.
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