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- W4387560523 abstract "We use the Trans-Planckian Censorship Conjecture (TCC) to constrain the decay constants $f$ characterizing a set of N identical axion-like fields with cosine potentials, improving upon the precision of other Swampland conjectures and existing string-theoretic arguments. We find that consistency with the TCC requires any such set of axion-like fields to satisfy $fsqrt{N} lesssim 0.6M_{pl}$, where $M_{pl}$ is the reduced Planck mass. We show that this bound makes models of axion-driven inflation incapable of simultaneously producing the required number of e-foldings and the observed scalar spectral tilt. In contrast, we find that models of axion quintessence can be simultaneously compatible with the TCC and observational data, provided that the axions' initial field values are set near the maxima of their potentials to within roughly $pm frac{pi}{5}f$." @default.
- W4387560523 created "2023-10-12" @default.
- W4387560523 creator A5000719625 @default.
- W4387560523 date "2023-10-09" @default.
- W4387560523 modified "2023-10-18" @default.
- W4387560523 title "Trans-Planckian censorship constraints on properties and cosmological applications of axion-like fields" @default.
- W4387560523 doi "https://doi.org/10.48550/arxiv.2310.05901" @default.
- W4387560523 hasPublicationYear "2023" @default.
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