A refined trans-Planckian censorship conjecture

Understand

We propose a refined version of trans-Planckian censorship conjecture (TCC), which could be elaborated from the strong scalar weak gravity conjecture combined with some entropy bounds.

• In particular, no fine-tuning on the inflation model-building is required in the refined TCC, and it automatically passes the tests from those stringy examples that support the original TCC.
• Furthermore, our refined TCC could be consistent with hilltop eternal inflation.