{
  "abstract": "We study the possibility of the formation of primordial black holes (PBHs) using an inflaton potential constructed by stabilizing all Kähler moduli employing both the perturbative and non-perturbative corrections in the large volume scenario in type-IIB/F string theory. We further introduce a small perturbation in one of the Kähler moduli that modifies the existing potential in the field space. The effective correction in the moduli space is made by introducing a localised Gaussian bump, which induces an ultra-slow-roll feature in the inflaton potential during the early cosmological inflation. The evolution of the amplitude of the curvature power spectrum is solved numerically by using the Mukhanov-Sasaki equation, with Bunch-Davies initial conditions. The inclusion of the Gaussian bump produces a sustainable enhancement in the amplitude of curvature power spectra around $k\\sim 1.12 \\times 10^{9} Mpc^{-1}$ for the formation of PBHs. The abundance of PBHs ($f_{PBH}$) is calculated using the Press-Schechter formalism for different values of critical density contrast and presented in the background of contemporary $f_{PBH}$ bounds and checked for viability with existing microlensing bounds, corresponding to a mass value $10^{-6}M_\\odot$ for $δ$ threshold value $δ_c=0.439$. The Hawking temperature and evaporation time are also determined for these black holes and found to be of the order of $2.78\\times 10^{-15}$ GeV and $8.5\\times10^{38}$ Gyr, respectively. The enhancement of curvature power spectra lies in the sensitivity region of the SKA observations, suggesting an indication that scalar-induced gravity waves may be probed in future observations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.36863",
  "author_total": 3,
  "authors": [
    {
      "name": "Chitrak Sarkar"
    },
    {
      "name": "Amitava Choudhuri"
    },
    {
      "name": "Buddhadeb Ghosh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/68nnfvgev78h2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.36863",
  "fulltext_url": null,
  "id": "68nnfvgev78h2",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.36863",
  "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",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7224135563",
  "pdf_url": "https://arxiv.org/pdf/2610.36863",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/68nnfvgev78h2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.36863",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.36863"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Primordial black holes from a type-IIB/F theory inflaton potential",
  "title_text": "Primordial black holes from a type-IIB/F theory inflaton potential",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/68nnfvgev78h2",
  "venue": "arXiv",
  "versions": []
}