{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3FEO42IMRKACYAMCACYUPDLBYX","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":"d0400769be86223b4694519983b18cfbf34cdf65ec3eb426c0200fdcdcfb3de1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-10-30T15:44:56Z","title_canon_sha256":"783e695bb6c533ea0f3564ee3fffd723a3b932f8a193aa7b3d37ffd4fae5165e"},"schema_version":"1.0","source":{"id":"1910.13937","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.13937","created_at":"2026-07-05T01:10:12Z"},{"alias_kind":"arxiv_version","alias_value":"1910.13937v3","created_at":"2026-07-05T01:10:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.13937","created_at":"2026-07-05T01:10:12Z"},{"alias_kind":"pith_short_12","alias_value":"3FEO42IMRKAC","created_at":"2026-07-05T01:10:12Z"},{"alias_kind":"pith_short_16","alias_value":"3FEO42IMRKACYAMC","created_at":"2026-07-05T01:10:12Z"},{"alias_kind":"pith_short_8","alias_value":"3FEO42IM","created_at":"2026-07-05T01:10:12Z"}],"graph_snapshots":[{"event_id":"sha256:e8ff91b02c9328c428392917896c122c63ce97a754ca8cedf2af915c48c17bc5","target":"graph","created_at":"2026-07-05T01:10:12Z","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/1910.13937/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the gravitational production of scalar dark matter particles during the inflationary and reheating epochs. The oscillatory behavior of the curvature scalar $R$ during the reheating phase generates two different enhancement mechanisms in the particle production. On the one hand, as it has been already discussed in previous works, it induces tachyonic instabilities in the field which are the dominant enhancement mechanism for light masses. On the other hand, we have found that it also provokes a resonant effect in the ultraviolet region of the spectrum which becomes dominant for m","authors_text":"Jose A. R. Cembranos, Jose M. S\\'anchez Vel\\'azquez, Luis J. Garay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-10-30T15:44:56Z","title":"Gravitational production of scalar dark matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.13937","kind":"arxiv","version":3},"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:ec9ea93bfa2b2dec55c7bf94c17646cbaabfbf29c76726f4f9308ba07851ccf0","target":"record","created_at":"2026-07-05T01:10:12Z","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":"d0400769be86223b4694519983b18cfbf34cdf65ec3eb426c0200fdcdcfb3de1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-10-30T15:44:56Z","title_canon_sha256":"783e695bb6c533ea0f3564ee3fffd723a3b932f8a193aa7b3d37ffd4fae5165e"},"schema_version":"1.0","source":{"id":"1910.13937","kind":"arxiv","version":3}},"canonical_sha256":"d948ee690c8a802c018200b1478d61c5f99c7d25f9aa6afdaa6bf681de5a08ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d948ee690c8a802c018200b1478d61c5f99c7d25f9aa6afdaa6bf681de5a08ff","first_computed_at":"2026-07-05T01:10:12.538034Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:10:12.538034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jB/MyAc0nYgS/tLLcCDOGod71ULXLuOgtK7rv9LHfRnibT9XZsrbWyDCOf4o0vcNtCmeXqeg9KAgY+xc0OpBBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:10:12.538484Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.13937","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec9ea93bfa2b2dec55c7bf94c17646cbaabfbf29c76726f4f9308ba07851ccf0","sha256:e8ff91b02c9328c428392917896c122c63ce97a754ca8cedf2af915c48c17bc5"],"state_sha256":"232fb742b8d02ba99e65095e0d9d24bff9e3a67de6a4c32e86eb1878cfadb276"}