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A refined trans-Planckian censorship conjecture

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Abstract

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.

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Authors and Affiliations

  1. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China

    Rong-Gen Cai

  2. Tufts Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, 02155, USA

    Shao-Jiang Wang

Authors
  1. Rong-Gen Cai
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  2. Shao-Jiang Wang
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Corresponding authors

Correspondence to Rong-Gen Cai or Shao-Jiang Wang.

Additional information

We thank Suddhasattwa Brahma, Mark Hertzberg, Ken Olum, Eran Palti, Fabrizio Rompineve, Shan-Ming Ruan, Alexander Vilenkin, and Masaki Yamada for helpful discussions and correspondences. Rong-Gen Cai is supported by the National Natural Science Foundation of China (Grant Nos. 11435006, 11647601, 11690022, 11821505, and 11851302), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB23030100), and the Key Research Program of Frontier Sciences of Chinese Academy of Sciences. Shao-Jiang Wang is supported by the postdoctoral scholarship of Tufts University from National Science Foundation.

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Cai, RG., Wang, SJ. A refined trans-Planckian censorship conjecture. Sci. China Phys. Mech. Astron. 64, 210011 (2021). https://doi.org/10.1007/s11433-020-1623-9

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