{
  "abstract": "The high-precision observations from the $Planck$ and BICEP/$Keck$ have imposed stringent bounds on the tensor-to-scalar ratio, ruling out many standard inflationary models. The recent bound from Atacama and SPT along with DESI provides a different viable landscape, making it difficult for the inflationary models to sustain. Amid these increasingly stringent and conflicting observational constraints, modified gravity theories offer a compelling avenue to restore the viability of inflationary models. With this motivation, we study mutated hilltop inflation within $f(ϕ, T)$ gravity, where a scalar field is non-minimally coupled to the trace of the energy-momentum tensor. The scalar spectral index $n_s$, the tensor spectral index $n_t$, and the tensor-to-scalar ratio $r$ are calculated, and their trajectories are presented in the $n_s-r$ plane. The results are then confronted with the latest combined CMB bounds from $Planck$, BICEP/$Keck$, ACT DR6, SPT, and DESI DR2. We report that MHI can predict $r \\sim 10^{-3}$ and is compatible with the latest CMB & DESI bound SPA+BK+DESI at $ 1σ$ CL.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.28720",
  "author_total": 2,
  "authors": [
    {
      "name": "Biswajit Deb"
    },
    {
      "name": "Atri Deshamukhya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1sdjw8j0ekmms.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.28720",
  "fulltext_url": null,
  "id": "1sdjw8j0ekmms",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.28720",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "gr-qc"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.28720",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1sdjw8j0ekmms.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.28720",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.28720"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Exploring mutated hilltop inflation in $f(ϕ, T)$ gravity with latest CMB and DESI observations",
  "title_text": "Exploring mutated hilltop inflation in $f(ϕ, T)$ gravity with latest CMB and DESI observations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/1sdjw8j0ekmms",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.newast.2026.102659",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}