{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2NHH2W5DT7DA2FQIDRW4C5EHQW","short_pith_number":"pith:2NHH2W5D","canonical_record":{"source":{"id":"2007.10978","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-07-21T17:56:50Z","cross_cats_sorted":[],"title_canon_sha256":"0a87619cb7641c5999a09d45505b634f1baf82ba859b2c9e421289e6566d0abd","abstract_canon_sha256":"68e0d4c638e994c637a694b609113c7895bb1b6c7a56eca4a19b1a38db765f40"},"schema_version":"1.0"},"canonical_sha256":"d34e7d5ba39fc60d16081c6dc1748785900002820561945cdaef2867c50a4329","source":{"kind":"arxiv","id":"2007.10978","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.10978","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"arxiv_version","alias_value":"2007.10978v1","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.10978","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_12","alias_value":"2NHH2W5DT7DA","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_16","alias_value":"2NHH2W5DT7DA2FQI","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_8","alias_value":"2NHH2W5D","created_at":"2026-07-05T02:04:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2NHH2W5DT7DA2FQIDRW4C5EHQW","target":"record","payload":{"canonical_record":{"source":{"id":"2007.10978","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-07-21T17:56:50Z","cross_cats_sorted":[],"title_canon_sha256":"0a87619cb7641c5999a09d45505b634f1baf82ba859b2c9e421289e6566d0abd","abstract_canon_sha256":"68e0d4c638e994c637a694b609113c7895bb1b6c7a56eca4a19b1a38db765f40"},"schema_version":"1.0"},"canonical_sha256":"d34e7d5ba39fc60d16081c6dc1748785900002820561945cdaef2867c50a4329","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:04:42.211183Z","signature_b64":"ozMlC66k8aNiJdKNDgG7v752p3ut60y89qcMdmELR3gn5OI1PPVp+1I6L8dfc7B624Tjvrfi3f3OsdiUWZleAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d34e7d5ba39fc60d16081c6dc1748785900002820561945cdaef2867c50a4329","last_reissued_at":"2026-07-05T02:04:42.210747Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:04:42.210747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.10978","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:04:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dv0mFHKfnaMjLdudjykqW0jd+24BwLR172B6YH1T5l6jLL34XmVjIqhpwQAiBt2Uo+Ej9o5/TqFruisSN8IwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:01:03.510876Z"},"content_sha256":"4be7f801bc3d01e186a1d46a818d5317e8a31f247eb0f2be10b5e27be6d719a1","schema_version":"1.0","event_id":"sha256:4be7f801bc3d01e186a1d46a818d5317e8a31f247eb0f2be10b5e27be6d719a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2NHH2W5DT7DA2FQIDRW4C5EHQW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A heatwave affair: mixed Higgs-$R^2$ preheating on the lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Chris Shepherd, Fedor Bezrukov","submitted_at":"2020-07-21T17:56:50Z","abstract_excerpt":"We use lattice methods to perform the first nonlinear study of preheating in $R^2$-healed Higgs inflation for \"$R^2$-like\" parameters $1.1\\times 10^9$ and $1.8\\times 10^9$ where the curvature-squared coupling $\\beta$ and nonminimal coupling $\\xi$ of the Higgs field contribute similarly to the CMB scalar perturbations. Preheating occurs first through tachyonic production of Higgs bosons, and later scattering off the homogeneous inflaton field. We generalise our results to \"Higgs-like\" parameters with smaller $\\beta$, where observables saturate the bound of instantaneous preheating. All predicti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.10978","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2007.10978/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:04:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xxPgbSEo/TTxxHeRV29srnTNuRgYi8P2oqaOp45FputCmG/sBAQbIpmpmbLCDTTg11ou24TXt8uH13cJwNr0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:01:03.512052Z"},"content_sha256":"84da7fc66fd62ff4a33d0abb302942a7859ffb45375b8e457742ad6aa732b0f9","schema_version":"1.0","event_id":"sha256:84da7fc66fd62ff4a33d0abb302942a7859ffb45375b8e457742ad6aa732b0f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/bundle.json","state_url":"https://pith.science/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-13T16:01:03Z","links":{"resolver":"https://pith.science/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW","bundle":"https://pith.science/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/bundle.json","state":"https://pith.science/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2NHH2W5DT7DA2FQIDRW4C5EHQW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2NHH2W5DT7DA2FQIDRW4C5EHQW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"68e0d4c638e994c637a694b609113c7895bb1b6c7a56eca4a19b1a38db765f40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-07-21T17:56:50Z","title_canon_sha256":"0a87619cb7641c5999a09d45505b634f1baf82ba859b2c9e421289e6566d0abd"},"schema_version":"1.0","source":{"id":"2007.10978","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.10978","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"arxiv_version","alias_value":"2007.10978v1","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.10978","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_12","alias_value":"2NHH2W5DT7DA","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_16","alias_value":"2NHH2W5DT7DA2FQI","created_at":"2026-07-05T02:04:42Z"},{"alias_kind":"pith_short_8","alias_value":"2NHH2W5D","created_at":"2026-07-05T02:04:42Z"}],"graph_snapshots":[{"event_id":"sha256:84da7fc66fd62ff4a33d0abb302942a7859ffb45375b8e457742ad6aa732b0f9","target":"graph","created_at":"2026-07-05T02:04:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2007.10978/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use lattice methods to perform the first nonlinear study of preheating in $R^2$-healed Higgs inflation for \"$R^2$-like\" parameters $1.1\\times 10^9$ and $1.8\\times 10^9$ where the curvature-squared coupling $\\beta$ and nonminimal coupling $\\xi$ of the Higgs field contribute similarly to the CMB scalar perturbations. Preheating occurs first through tachyonic production of Higgs bosons, and later scattering off the homogeneous inflaton field. We generalise our results to \"Higgs-like\" parameters with smaller $\\beta$, where observables saturate the bound of instantaneous preheating. All predicti","authors_text":"Chris Shepherd, Fedor Bezrukov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-07-21T17:56:50Z","title":"A heatwave affair: mixed Higgs-$R^2$ preheating on the lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.10978","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4be7f801bc3d01e186a1d46a818d5317e8a31f247eb0f2be10b5e27be6d719a1","target":"record","created_at":"2026-07-05T02:04:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"68e0d4c638e994c637a694b609113c7895bb1b6c7a56eca4a19b1a38db765f40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-07-21T17:56:50Z","title_canon_sha256":"0a87619cb7641c5999a09d45505b634f1baf82ba859b2c9e421289e6566d0abd"},"schema_version":"1.0","source":{"id":"2007.10978","kind":"arxiv","version":1}},"canonical_sha256":"d34e7d5ba39fc60d16081c6dc1748785900002820561945cdaef2867c50a4329","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d34e7d5ba39fc60d16081c6dc1748785900002820561945cdaef2867c50a4329","first_computed_at":"2026-07-05T02:04:42.210747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:04:42.210747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ozMlC66k8aNiJdKNDgG7v752p3ut60y89qcMdmELR3gn5OI1PPVp+1I6L8dfc7B624Tjvrfi3f3OsdiUWZleAA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:04:42.211183Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.10978","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4be7f801bc3d01e186a1d46a818d5317e8a31f247eb0f2be10b5e27be6d719a1","sha256:84da7fc66fd62ff4a33d0abb302942a7859ffb45375b8e457742ad6aa732b0f9"],"state_sha256":"781ef070a672875762f69ba0308a363682c8d5f036c673857d14e9523007af87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b09nM6T25BNtP6K+m7HNc8EfPbRwD6K06ekxzywzlyXDAF60QCUj3zacy8tIMfunieDQwSeGZHclt+piHOInAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T16:01:03.535756Z","bundle_sha256":"e92f5394dee6696762de30d05964fc97ae22d67ff974ce57d640b6b6d175b47f"}}