Strengthening the TCC Bound on Inflationary Cosmology

Abstract

We show that the constraints which follow from the {\it Trans-Planckian Censorship Conjecture} for inflationary cosmology can be strengthened if the pre-inflationary universe was dominated by radiation. The resulting upper bound on the energy scale of inflation is $\eta \sim 10^4\mathrm{GeV}$, close to the scale accessible to accelerator experiments.

5 pages, 1 figure; v2: references added and updated, v3: minor clarifications added

References in corpus (12)

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Cited by in corpus (20)

• Entanglement Entropy of Cosmological Perturbations
• Tsallis holographic dark energy for inflation
• Quantum Circuit Complexity of Primordial Perturbations
• Brane inflation and Trans-Planckian censorship conjecture
• Swampland, Trans-Planckian Censorship and Fine-Tuning Problem for Inflation: Tunnelling Wavefunction to the Rescue
• Role of trans-Planckian modes in cosmology
• On the Trans-Planckian Censorship Conjecture and the Generalized Non-Minimal Coupling
• Unattainability of the Trans-Planckian regime in Nonlocal Quantum Gravity
• Model Independent Analysis of Supernova Data, Dark Energy, Trans-Planckian Censorship and the Swampland
• Creating Spatial Flatness by Combining String Gas Cosmology and Power Law Inflation
• Thermal, Trapped and Chromo-Natural Inflation in light of the Swampland Criteria and the Trans-Planckian Censorship Conjecture
• Unitarity Problems for an Effective Field Theory Description of Early Universe Cosmology
• Rejuvenating the hope of a swampland consistent inflated multiverse with tachyonic inflation in the high energy RS-II Braneworld
• Lorentz violating inflation and the Swampland
• Limitations of an Effective Field Theory Treatment of Early Universe Cosmology
• Emergent universe: tensor perturbations within the CSL framework
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Escape from the swamp with spectator
• The Role of Torsion in Trans-Planckian Physics
• Implications of single field inflation in general cosmological scenarios on the nature of dark energy given the swampland conjectures