{
  "abstract": "In this paper, we review the impact of a strong magnetic field on the neutral two-flavor color superconducting (2SC) phase of dense quark matter. Using a Nambu-Jona-Lasinio (NJL) model approach in the mean-field approximation, we first solve the gap equations for the diquark condensate $Δ$ and the electric chemical potential $μ_e$ under a uniform external magnetic field, and discuss the coupled evolution of the chiral and diquark order parameters. We then evaluate the field-dependent Meissner masses of the rotationally charged gluons for a wide range of densities and moderate diquark coupling strengths. Combining the \"zero-mode problem\" mechanism with the neutrality condition, we show that the gluon masses become tachyonic even at moderate magnetic-field values, signaling a chromomagnetic instability in density regions where the system was stable at zero field. This instability can be resolved through the restructuring of the ground state with the formation of a gluon vortex condensate. A remarkable consequence of the vortex configuration is the paramagnetic amplification of the in-medium magnetic field: seed fields of the order of $10^{15}$ G can be enhanced by up to two orders of magnitude, reaching $\\sim 10^{17}$ G, precisely the range predicted for magnetar cores. We compare this microscopic mechanism with the conventional dynamo explanation and discuss how it offers a plausible explanation for the extremely high magnetic fields expected to be realized in magnetar interiors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Universe 2026, 12, 313",
  "arxiv": "2610.32028",
  "author_total": 1,
  "authors": [
    {
      "name": "Bo Feng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dejw9jfsw4h8n.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.32028",
  "fulltext_url": null,
  "id": "dejw9jfsw4h8n",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.32028",
  "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.HE"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.32028",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dejw9jfsw4h8n.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.32028",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.32028"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Magnetic field effect on neutral color superconductivity as a mechanism to boost the inner magnetic field of magnetars",
  "title_text": "Magnetic field effect on neutral color superconductivity as a mechanism to boost the inner magnetic field of magnetars",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/dejw9jfsw4h8n",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3390/universe12100313",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}