{
  "abstract": "We investigate non-Hermitian $\\mathcal{PT}$-symmetric Klein--Gordon (KG) fields in a magnetized cosmic string spacetime. A complex non-minimal scalar interaction, $\\mathcal{F}_μ=(0,\\mathcal{F}_{r},0,0)$ with $\\mathcal{F}_{r}=ωr+ib\\in\\mathbb{C}$, indulged with a magnetic charge $q=ie$, is shown to introduce an effective $\\mathcal{PT}$-symmetric Klein--Gordon oscillator supplemented by complex Coulombic and linear interactions. The resulting radial equation is shown to be conditionally exactly solvable using a biconfluent Heun series-to-polynomial approach. To observe non-Hermitian \\(\\mathcal{PT}\\) symmetrization, we compare with the Hermitian counterpart by mapping $e=-i\\tilde e \\Rightarrow q\\in \\mathbb R$ and $b=-i\\tilde b \\Rightarrow \\mathcal F_r\\in \\mathbb R$. In the limiting case $ω=0$, the system is shown to reduce to an exactly solvable non-Hermitian \\(\\mathcal{PT}\\) symmetric Coulomb-type KG equation using confluent hypergeometric series/polynomials. Hereby, for both \\(\\mathcal{PT}\\) symmetric models considered, we show that non-Hermitian \\(\\mathcal{PT}\\) symmetrization introduces an upper limit for the allowed energies, unlike the corresponding Hermitian cases. These results provide an analytically tractable framework for exploring non-Hermitian relativistic quantum fields in curved spacetimes and demonstrate the role of $\\mathcal{PT}$-symmetry in regulating the allowed spectrum.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Lett. B 880 (2026) 140855",
  "arxiv": "2607.08148",
  "author_total": 2,
  "authors": [
    {
      "name": "Omar Mustafa"
    },
    {
      "name": "Abdullah Guvendi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ab8m6n51m9cbj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.08148",
  "fulltext_url": null,
  "id": "ab8m6n51m9cbj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.08148",
  "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/2607.08148",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ab8m6n51m9cbj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2607.08148",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.08148"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Spectroscopic structure of Non-Hermitian $\\mathcal{PT}$-Symmetric Klein--Gordon Fields in a Magnetized Cosmic String Spacetime",
  "title_text": "Spectroscopic structure of Non-Hermitian 𝒫𝒯-Symmetric Klein--Gordon Fields in a Magnetized Cosmic String Spacetime",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/ab8m6n51m9cbj",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.physletb.2026.140855",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}