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The renormalized survival probability $\\mathcal{P}_\\Phi(t)$ of a (quasi) particle ``born'' at time $t_b$ and decaying at rest in the comoving frame, $\\mathcal{P}_\\Phi(t) = \\Big[\\frac{t}{t_b}\\Big]^{-\\frac{Y^2}{8\\pi^2}}~ e^{ \\frac{Y^2}{4\\pi^2}\\,\\big(t/t_b\\big)^{1/4} } \\,e^{-\\Gamma_0\\,(t-t_b)}~ \\mathcal{P}_\\Phi(t_b) $, with $\\Gamma_0$ the decay rate at rest in Minkowski space-time. For an ultrarelativistic particle we find $"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1904.12343","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-28T16:36:32Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"title_canon_sha256":"ab09b3779e7224bcb5524fbdb59834794ff7feeafcb18913108ac4fc4cd97ff6","abstract_canon_sha256":"fc898f78144a7962fe4ee2a214b7a1b048b7cd38fdae97ac2c27c8f4b9bff2de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:08.645149Z","signature_b64":"u4d437rR0HV2NhVfkls9WY6YwdPVjmQqmks5ESEN3WK5Vb5VJxXQGRYV1kKUTGxq4xd4IxR21/Mqnrtu2cVfBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9930fa195757b27c72a0cc50014ae454a3ef99241a59b26a9b16b35b5865439","last_reissued_at":"2026-05-17T23:40:08.644489Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:08.644489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cosmological decay of Higgs-like scalars into a fermion channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Daniel Boyanovsky, Nathan Herring","submitted_at":"2019-04-28T16:36:32Z","abstract_excerpt":"We study the decay of a Higgs-like scalar Yukawa coupled to massless fermions in post-inflationary cosmology, combining a non-perturbative method with an adiabatic expansion. The renormalized survival probability $\\mathcal{P}_\\Phi(t)$ of a (quasi) particle ``born'' at time $t_b$ and decaying at rest in the comoving frame, $\\mathcal{P}_\\Phi(t) = \\Big[\\frac{t}{t_b}\\Big]^{-\\frac{Y^2}{8\\pi^2}}~ e^{ \\frac{Y^2}{4\\pi^2}\\,\\big(t/t_b\\big)^{1/4} } \\,e^{-\\Gamma_0\\,(t-t_b)}~ \\mathcal{P}_\\Phi(t_b) $, with $\\Gamma_0$ the decay rate at rest in Minkowski space-time. 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