{
  "abstract": "We study effective reheating in a scalar--Gauss--Bonnet inflationary model with a phase-space-dependent coupling $μ(ϕ,X)$, 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 $N_{\\rm re}$ and temperature $T_{\\rm re}$ through the thermal-history matching relation. We first perform two fixed-pivot reference scans by varying the overall Gauss--Bonnet strength $λ_{\\rm GB}$ and the kinetic parameter $g_{_X}$ separately. For the reference parameter choices, increasing either parameter increases $N_{\\rm re}$ and decreases $T_{\\rm re}$ for the selected reheating equations of state. Additional benchmark calculations clarify how these variations depend on the dynamical regime of the model. In the $λ_{\\rm GB}$ scan, the increase in $N_{\\rm re}$ and the decrease in $T_{\\rm re}$ 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 $N_{\\rm re}$ and an increase in $T_{\\rm re}$ 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, $\\overline{w}_{\\rm re}=-1/3,0,2/3,$ and $1$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.02506",
  "author_total": 3,
  "authors": [
    {
      "name": "Ali Seidabadi"
    },
    {
      "name": "Sara Saghafi"
    },
    {
      "name": "Kourosh Nozari"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/61h7g1jp9vkb4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.02506",
  "fulltext_url": null,
  "id": "61h7g1jp9vkb4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.02506",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7172412481",
  "pdf_url": "https://arxiv.org/pdf/2608.02506",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/61h7g1jp9vkb4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2608.02506",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.02506"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    }
  ],
  "title": "Effective reheating in Gauss--Bonnet inflation with $μ(ϕ,X)$ coupling",
  "title_text": "Effective reheating in Gauss--Bonnet inflation with μ(ϕ,X) coupling",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/61h7g1jp9vkb4",
  "venue": "arXiv",
  "versions": []
}