{
  "abstract": "We study effective reheating in a scalar–Gauss–Bonnet inflationary model with a phase-space-dependent coupling $$\\mu (\\phi ,X),$$ in which a compact field-space feature is combined with a bounded kinetic gate. The modified inflationary background determines the pivot-scale quantities and the effective energy density at the end of inflation. These quantities are then used to derive the reheating duration $$N_{\\textrm{re}}$$ and temperature $$T_{\\textrm{re}}$$ through the thermal-history matching relation. We first perform two fixed-pivot reference scans by varying the overall Gauss–Bonnet strength $$\\lambda _{\\textrm{GB}}$$ and the kinetic-gate amplitude $$g_{_X}$$ separately. For the reference parameter choices, increasing either parameter increases $$N_{\\textrm{re}}$$ and decreases $$T_{\\textrm{re}}$$ for the selected reheating equations of state. Additional benchmark calculations clarify how these variations depend on the dynamical regime of the model. In the $$\\lambda _{\\textrm{GB}}$$ scan, the increase in $$N_{\\textrm{re}}$$ and the decrease in $$T_{\\textrm{re}}$$ persist, although both variations become strongly suppressed when the coupling is more localized or when the end of inflation is controlled more strongly by the E-model potential. In the $$g_{_X}$$ scan, stronger field-space localization and kinetic saturation can instead lead to a slight decrease in $$N_{\\textrm{re}}$$ and an increase in $$T_{\\textrm{re}}$$ as $$g_{_X}$$ is increased. When the bounded kinetic contribution is considered together with a weaker overall Gauss–Bonnet interaction, the resulting changes in the reheating quantities become nearly negligible. The fixed-pivot predictions of the representative and alternative benchmarks are compared with CMB constraints. These reheating constraints are then discussed for four representative values of the effective equation-of-state parameter, $$\\overline{w}_{\\textrm{re}}=-1/3,0,2/3,$$ and 1. Finally, the analysis is generalized to a time-dependent reheating equation of state $$w_{\\textrm{re}}(N),$$ showing that the thermal-history matching relations depend only on its e-fold average $$\\overline{w}_{\\textrm{re}},$$ while the detailed evolution of $$w_{\\textrm{re}}(N)$$ remains degenerate within the effective framework adopted here.",
  "abstract_shown": true,
  "affiliations": [
    "University of Mazandaran"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Ali Seidabadi",
      "orcid": "0009-0008-0929-6174"
    },
    {
      "affs": [
        0
      ],
      "name": "Sara Saghafi",
      "orcid": "0000-0001-8381-973X"
    },
    {
      "affs": [
        0
      ],
      "name": "Kourosh Nozari",
      "orcid": "0000-0003-4368-5823"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1aqyxp0hsdgtp.bib",
  "cited_by": 0,
  "doi": "10.1140/epjc/s10052-026-16525-y",
  "fulltext_url": null,
  "id": "1aqyxp0hsdgtp",
  "issns": [
    "1434-6052"
  ],
  "landing_url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16525-y",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "physics/high-energy"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16525-y.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/1aqyxp0hsdgtp.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:20:44Z",
      "native_id": "10.1140/epjc/s10052-026-16525-y",
      "source": "feed-springer",
      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16525-y"
    },
    {
      "first_seen": "2026-11-06T12:20:49Z",
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      "source": "crossref",
      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16525-y"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "feed-journal:physics/high-energy",
      "subfield": "high-energy"
    }
  ],
  "title": "Effective reheating in Gauss–Bonnet inflation with $$\\mu (\\phi ,X)$$ coupling",
  "title_text": "Effective reheating in Gauss–Bonnet inflation with μ (ϕ ,X) coupling",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T00:21:04Z",
  "url": "https://research.draconitic.com/paper/1aqyxp0hsdgtp",
  "venue": "The European Physical Journal C",
  "versions": []
}