{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:SYRNPCSX5GDVWL5U72BKBS6PF7","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":"6c08cff8b1f84942779e867c8b14625563ae9a142e6fbe544424e26a330245d1","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-08-03T20:01:02Z","title_canon_sha256":"f9ec501df6295dd60e8d5cacc20ed818ee4c62bb510c3b8c24750b92a01b19fb"},"schema_version":"1.0","source":{"id":"1008.0644","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0644","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0644v2","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0644","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"pith_short_12","alias_value":"SYRNPCSX5GDV","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SYRNPCSX5GDVWL5U","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SYRNPCSX","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:dd758ebcbf1706ad6137489024271dde532f4017c7d5c8e597f06fef7d3a82dd","target":"graph","created_at":"2026-05-18T04:35:36Z","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"},"paper":{"abstract_excerpt":"Relevant deformations of gravity present an exciting window of opportunity to probe the rigidity of gravity on cosmological scales. For a single-graviton theory, the leading relevant deformation constitutes a graviton mass term. In this paper, we investigate the classical and quantum stability of massive cosmological gravitons on generic Friedman backgrounds. For a Universe expanding towards a de Sitter epoch, we find that massive cosmological gravitons are self-protected against unitarity violations by a strong coupling phenomenon.","authors_text":"Dennis D. Dietrich, Felix Berkhahn, Stefan Hofmann","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-08-03T20:01:02Z","title":"Self-Protection of Massive Cosmological Gravitons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0644","kind":"arxiv","version":2},"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:a1e509b7cd6c4af1bb44f8a2bddca6afff9e23cbfad90fab02d7a68c520a6862","target":"record","created_at":"2026-05-18T04:35:36Z","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":"6c08cff8b1f84942779e867c8b14625563ae9a142e6fbe544424e26a330245d1","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-08-03T20:01:02Z","title_canon_sha256":"f9ec501df6295dd60e8d5cacc20ed818ee4c62bb510c3b8c24750b92a01b19fb"},"schema_version":"1.0","source":{"id":"1008.0644","kind":"arxiv","version":2}},"canonical_sha256":"9622d78a57e9875b2fb4fe82a0cbcf2ff33c0b7abac77ab0c04d36e4e30b1f94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9622d78a57e9875b2fb4fe82a0cbcf2ff33c0b7abac77ab0c04d36e4e30b1f94","first_computed_at":"2026-05-18T04:35:36.654890Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:36.654890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y/PNvsPP7+V6zEIz7iNC8ay59L8X1DwX2JQ0PkLmuX8VMqUZ1yism+9cs6tVKgL42k+vlFfnH0InfPDFxbICDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:36.655457Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.0644","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1e509b7cd6c4af1bb44f8a2bddca6afff9e23cbfad90fab02d7a68c520a6862","sha256:dd758ebcbf1706ad6137489024271dde532f4017c7d5c8e597f06fef7d3a82dd"],"state_sha256":"c20ee0b063b5059d4474bc4913ab1a88243c6d427e052acdc448fdffe253bbf0"}