Metraipolis › archive › dc_bfd06752cfff

Topological Multi-Natural Inflation — arXiv:2610.41953

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.41953
License (as archived): CC0-1.0
Archived: 2026-11-03T05:58:36.112Z
SHA-256 of the archived text: 122efa32a54cb76270381f3d4589c9e51ac325777373be94e6ef980bd272ae52
Stable URL of this page: https://metraipolis.com/documento/dc_bfd06752cfff

How to cite

Topological Multi-Natural Inflation — arXiv:2610.41953 — arXiv (en), https://arxiv.org/abs/2610.41953 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_bfd06752cfff (Metraipolis archive dc_bfd06752cfff, sha256 122efa32a54cb76270381f3d4589c9e51ac325777373be94e6ef980bd272ae52)

BibTeX

@misc{dcbfd06752cfff,
  title = {Topological Multi-Natural Inflation — arXiv:2610.41953},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.41953},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_bfd06752cfff; sha256 122efa32a54cb76270381f3d4589c9e51ac325777373be94e6ef980bd272ae52},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.41953. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We investigate topological inflation in minimal multi-natural inflation, in which the axion potential consists of two cosine terms. Focusing on the high-scale regime, we perform a systematic parameter scan for representative ratios of the two periods and identify regions consistent with current constraints on the scalar spectral index and tensor-to-scalar ratio, including those from the Atacama Cosmology Telescope. The interplay of the two harmonics allows departures from the quartic hilltop limit and accommodates the higher spectral index favored by recent cosmological data combinations. We characterize the hilltop and near-inflection-point branches and analyze the associated vacuum structure and domain-wall properties. We also discuss a symmetry-breaking origin of the required domain walls when the inflaton is the angular component of a complex scalar field. We identify regions in which the observational constraints and the adopted criteria for topological inflation are simultaneously satisfied, including regions with a sub-Planckian axion decay constant. Our results show that the observational tension encountered in the minimal quartic double-well model need not extend to topological inflation in a minimal multi-natural axion potential.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.CO, nuovi lavori del giorno).
Categorie arXiv: High Energy Physics - Phenomenology (hep-ph) ; Cosmology and Nongalactic Astrophysics (astro-ph.CO).
Pagina del lavoro: https://arxiv.org/abs/2610.41953 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T05:39:18.460Z dalla pagina https://arxiv.org/list/astro-ph.CO/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).