{"paper":{"title":"Warm inflation in Weyl geometric gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Warm inflation in Weyl geometric gravity allows the universe to transition naturally from inflation to radiation domination.","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Hong-Hao Zhang, Lei Ming, Runhua Huang, Shi-Dong Liang, Tiberiu Harko","submitted_at":"2026-05-16T08:58:02Z","abstract_excerpt":"We investigate the warm inflationary scenario in the Weyl geometric gravity theory, in which the action is constructed by adding matter to the simplest conformally invariant gravitational action in Weyl geometry. The $\\tilde{R}^2$ theory can be formulated equivalently as a linear theory supplemented by an additional scalar degree of freedom originating from higher-order curvature terms, with the equations of motion obtained via variational methods. We investigate the cosmological implications of the theory by considering the warm inflationary scenario of the early evolution of the Universe, in"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We have successfully developed a warm inflationary model in which the Universe transitions naturally from an inflationary epoch to a radiation-dominated era. The relevant cosmological observables have been calculated and compared with the latest observational constraints from the ACT data.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the linear dissipation coefficient together with a quartic potential remains a valid and sufficient description once the Weyl vector is included, and that the chosen coupling models allow the required transition without additional fine-tuning or post-hoc adjustments.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Warm inflation with linear dissipation and quartic potential is realized in Weyl geometric gravity, incorporating the Weyl vector to produce a smooth transition to radiation domination with observables consistent with ACT data.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Warm inflation in Weyl geometric gravity allows the universe to transition naturally from inflation to radiation domination.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"6c1aa5efba17a7e3a5964cbb57c51a50511c6fafbac4475ae4bbd3167cc81839"},"source":{"id":"2605.16884","kind":"arxiv","version":1},"verdict":{"id":"907ca529-ba46-40b8-a3b3-90af8dc8ca1c","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T20:43:03.507568Z","strongest_claim":"We have successfully developed a warm inflationary model in which the Universe transitions naturally from an inflationary epoch to a radiation-dominated era. The relevant cosmological observables have been calculated and compared with the latest observational constraints from the ACT data.","one_line_summary":"Warm inflation with linear dissipation and quartic potential is realized in Weyl geometric gravity, incorporating the Weyl vector to produce a smooth transition to radiation domination with observables consistent with ACT data.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the linear dissipation coefficient together with a quartic potential remains a valid and sufficient description once the Weyl vector is included, and that the chosen coupling models allow the required transition without additional fine-tuning or post-hoc adjustments.","pith_extraction_headline":"Warm inflation in Weyl geometric gravity allows the universe to transition naturally from inflation to radiation domination."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.16884/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T21:01:19.194464Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T20:51:11.080771Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T18:41:56.288434Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T18:33:26.366112Z","status":"skipped","version":"1.0.0","findings_count":0}],"snapshot_sha256":"a38ec2ccc5ab1268a024cff9d03bdf5ea53ccef9b0b3b9540b31b1dafb18ec08"},"references":{"count":87,"sample":[{"doi":"","year":null,"title":"The non-minimal coupling model 12","work_id":"ac6908f2-d5a7-457c-9628-f46ecef577c1","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2026,"title":"Warm inflation in Weyl geometric gravity","work_id":"e5a5cf9a-ce4d-420b-a5db-92b7634ca562","ref_index":2,"cited_arxiv_id":"2605.16884","is_internal_anchor":true},{"doi":"","year":null,"title":"one finds the connection ˜Γ of the Weyl geometry as having the form ˜Γλ µν = Γ λ µν + 1 2α [ δλ µ ων +δλ ν ωµ − gµν ωλ ] = Γλ µν + Ξλ µν, (5) where Γ λ µν is the Levi-Civita connection, given by its us","work_id":"10e06d68-e8e7-4b6f-ae44-39b56c1bc701","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"with Eq. ( 14), we obtain the action of the Weyl geometric theory defined in the Riemannian space, and given by S = ∫ ( 2 4!ξ2φ 2 ( R − 3α ∇ λωλ − 3 2α 2ωλωλ ) (18) − 1 4!ξ2φ 4 − 1 4FµνFµν + Leff ) √ −g","work_id":"0e02e684-f756-4d82-9758-8eb78ae5e195","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"( 32) is equivalent to ˙ρψ + 3H (ρψ +pψ ) = − Γ ˙ψ 2","work_id":"ba90873b-4341-4516-8bfe-e5feba435b69","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":87,"snapshot_sha256":"dab963aa9194651521e2e49a6df4770bc2a7f9a68ffbb2fc01625c5574e54339","internal_anchors":5},"formal_canon":{"evidence_count":2,"snapshot_sha256":"34c905ffc76b0314b3c1b54bcb114963d9a47768fc2dd227778dc55c60f559ed"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}