Trans-Planckian Censorship Conjecture and Early Universe Cosmology

@inproceedings{Brandenberger2021TransPlanckianCC,
  title={Trans-Planckian Censorship Conjecture and Early Universe Cosmology},
  author={Robert H. Brandenberger},
  year={2021}
}
I review the Trans-Planckian Censorship Conjecture (TCC) and its implications for cosmology, in particular for the inflationary universe scenario. Whereas the inflationary scenario is tightly constrained by the TCC, alternative early universe scenarios are not restricted. 

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References

SHOWING 1-10 OF 95 REFERENCES
Trans-Planckian censorship and inflationary cosmology
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
Trans-Planckian censorship conjecture in holographic cosmology
In this paper, we discuss the implications of the recently proposed trans-Planckian Censorship Conjecture (TCC) for holographic cosmology. For models of holographic inflation that are dual to inverse
Trans-Planckian censorship conjecture and nonthermal post-inflationary history
The recently proposed Trans-Planckian Censorship Conjecture (TCC) can be used to constrain the energy scale of inflation. The conclusions however depend on the assumptions about post-inflationary
Non‐Standard Cosmological Models and The Trans‐Planckian Censorship Conjecture
The trans-Planckian censorship conjecture (TCC) puts an upper bound on the life-time of de Sitter spacetimes. It has immediate consequences for inflationary cosmology. In the standard paradigm, the
Trans-Planckian censorship of multistage inflation and dark energy
We explore the bound of the trans-Planckian censorship conjecture on an inflation model with multiple stages. We show that if the first inflationary stage is responsible for the primordial
Trans-Planckian censorship and other swampland bothers addressed in warm inflation
The implications of the recently proposed trans-Planckian censorship conjecture (TCC) are analyzed in the context of warm inflation. It is found that for a single-stage accelerated expansion the
Trans-Planckian censorship and inflation in grand unified theories
Abstract The recently proposed trans-Planckian censorship conjecture (TCC) amounts to the claim that inflation models with an inflationary energy scale larger than Λ inf max ∼ 10 9 GeV belong to the
Trans-Planckian Issues for Inflationary Cosmology
The accelerated expansion of space during the cosmological inflation period leads to trans-Planckian issues which need to be addressed. Most importantly, the physical wavelength of fluctuations which
Trans-Planckian censorship conjecture from the swampland distance conjecture
Starting from the swampland distance conjecture, and using the species bound for a large number of weakly-coupled particles, we give a derivation of the recently proposed trans-Planckian censorship
Trans-Planckian censorship, inflation, and dark matter
If the inflationary phase lasted longer than the minimal period, the length scales observed today originate from modes that were smaller than the Planck length during inflation. It was recently
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