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Bibliographic Details
Main Authors: Ebata, Kenji, Katagiri, So, Matsuoka, Yoshiki, Sehara, Takaaki, Sugamoto, Akio
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2507.02236
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Table of Contents:
  • We propose a novel mechanism for realizing slow-roll inflation that is fully consistent with observational data, based on conformal transformations acting exclusively on a complex scalar field -- without coupling to the gravitational sector. These transformations generically produce a plateau in the inflaton potential, as guaranteed by the maximum modulus theorem, thereby naturally satisfying the slow-roll conditions. Our framework utilizes squeezing operations generated by the Virasoro algebra without central extension, as developed in our earlier work. The resulting inflationary potentials depend on the Virasoro mode $n$, the power $m$ of the original potential, and the squeezing parameter $θ$. We present approximate analytical expressions at leading order for the special case $n=-2$, and perform numerical analyses for both $n=-2$ and other values of $n$. These reveal parameter regimes in which the predicted cosmological observables $(n_{s},r)$ align remarkably well with current CMB measurements.