{"paper":{"title":"Fixing the Renormalization of Inflationary Loops via Ward Identities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Ward identities from large gauge symmetry fix renormalization ambiguities in inflationary loop corrections.","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Cheng-Jun Fang, Zong-Kuan Guo","submitted_at":"2026-05-13T10:39:48Z","abstract_excerpt":"Evaluating quantum loop corrections to curvature perturbations in non-attractor inflation presents theoretical ambiguities. A crucial aspect of this challenge lies in the unconstrained finite contributions in renormalization counterterms and regularization scheme dependence. In this work, we derive exact Ward identities via the path integral formalism based on the large gauge symmetry of the background-perturbation split. These identities are shown to impose strict, model-independent constraints on the renormalization procedure. Provided the ultraviolet completion respects this symmetry, the W"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"These identities are shown to impose strict, model-independent constraints on the renormalization procedure. Provided the ultraviolet completion respects this symmetry, the Ward identities non-perturbatively govern the infrared evolution of the power spectrum.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The ultraviolet completion of the theory respects the large gauge symmetry of the background-perturbation split.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Ward identities from large gauge symmetry impose model-independent constraints on renormalizing inflationary loops and non-perturbatively govern the infrared power spectrum evolution.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Ward identities from large gauge symmetry fix renormalization ambiguities in inflationary loop corrections.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"ce9097810e338fd984fe1b97a296ad42a365c29cef71d1fc1799f170814c6bce"},"source":{"id":"2605.13325","kind":"arxiv","version":1},"verdict":{"id":"577aa174-13be-4be1-8ead-b06cb1df48dd","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T18:43:54.300573Z","strongest_claim":"These identities are shown to impose strict, model-independent constraints on the renormalization procedure. Provided the ultraviolet completion respects this symmetry, the Ward identities non-perturbatively govern the infrared evolution of the power spectrum.","one_line_summary":"Ward identities from large gauge symmetry impose model-independent constraints on renormalizing inflationary loops and non-perturbatively govern the infrared power spectrum evolution.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The ultraviolet completion of the theory respects the large gauge symmetry of the background-perturbation split.","pith_extraction_headline":"Ward identities from large gauge symmetry fix renormalization ambiguities in inflationary loop corrections."},"references":{"count":101,"sample":[{"doi":"","year":1981,"title":"A. H. Guth, Phys. Rev. D23, 347 (1981)","work_id":"99ba40b3-7690-44f0-8acf-2f3ff4625e4e","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1980,"title":"A. A. Starobinsky, Phys. Lett. B91, 99 (1980)","work_id":"01f870e3-4ec6-4115-9879-33147fbf11f0","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Planck 2018 results. X. Constraints on inflation","work_id":"ac5d2133-b998-4b22-878d-b78fb5623e08","ref_index":3,"cited_arxiv_id":"1807.06211","is_internal_anchor":true},{"doi":"","year":2020,"title":"Akramiet al.(Planck), Planck 2018 results","work_id":"a36312f2-3706-45ac-8631-451a2b0e9e3d","ref_index":4,"cited_arxiv_id":"1905.05697","is_internal_anchor":true},{"doi":"","year":2025,"title":"The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $\\Lambda$CDM Parameters","work_id":"abcbecb3-ae6f-4748-a925-133dc8647d67","ref_index":5,"cited_arxiv_id":"2503.14452","is_internal_anchor":true}],"resolved_work":101,"snapshot_sha256":"caebf590419d055ba51638f37a756e2c07af3b6cd6b608bf1565700d616d8ebd","internal_anchors":40},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}