{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BQ5RCF5EHDX6I7IW7DFV5PJ6MC","short_pith_number":"pith:BQ5RCF5E","canonical_record":{"source":{"id":"1912.09449","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-19T18:25:08Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"cdc05d5dd6a643acaa28121dda309d29aac6b5f12030d930236cd6916e79b983","abstract_canon_sha256":"f120928d0705d2cf09a0eef9128547a9afef94702e215ca6b6036c58a9cbefa0"},"schema_version":"1.0"},"canonical_sha256":"0c3b1117a438efe47d16f8cb5ebd3e608476f66d1867a402a9ff518813d24b98","source":{"kind":"arxiv","id":"1912.09449","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.09449","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"arxiv_version","alias_value":"1912.09449v2","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.09449","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_12","alias_value":"BQ5RCF5EHDX6","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_16","alias_value":"BQ5RCF5EHDX6I7IW","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_8","alias_value":"BQ5RCF5E","created_at":"2026-07-05T02:03:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BQ5RCF5EHDX6I7IW7DFV5PJ6MC","target":"record","payload":{"canonical_record":{"source":{"id":"1912.09449","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-19T18:25:08Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"cdc05d5dd6a643acaa28121dda309d29aac6b5f12030d930236cd6916e79b983","abstract_canon_sha256":"f120928d0705d2cf09a0eef9128547a9afef94702e215ca6b6036c58a9cbefa0"},"schema_version":"1.0"},"canonical_sha256":"0c3b1117a438efe47d16f8cb5ebd3e608476f66d1867a402a9ff518813d24b98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:03:25.079845Z","signature_b64":"trPQekh1ODx3CA6bXdR4EvQruz0faV8ep1bbslO+Y99Y9SAtyyzJXuLlqDWedyAWPuVJ4uy9j+qRRAAO/761Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c3b1117a438efe47d16f8cb5ebd3e608476f66d1867a402a9ff518813d24b98","last_reissued_at":"2026-07-05T02:03:25.079493Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:03:25.079493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.09449","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:03:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CYJ5VjXeIPLJ8wTWZjHO1OUweRPsqjh0/zcqLQQSPZhALz13cA08JWrCPzdHLF+9k7WYAmC7AYD2DXUaSdGyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T01:10:41.858012Z"},"content_sha256":"72ed3ed80f6184f4174224cf1946f14de0def6be9e20e0f5060735f2b3e15389","schema_version":"1.0","event_id":"sha256:72ed3ed80f6184f4174224cf1946f14de0def6be9e20e0f5060735f2b3e15389"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BQ5RCF5EHDX6I7IW7DFV5PJ6MC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Vainshtein Screening in Bimetric Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Angnis Schmidt-May, Juri Smirnov, Marvin L\\\"uben","submitted_at":"2019-12-19T18:25:08Z","abstract_excerpt":"We demonstrate that the instabilities in linear cosmological perturbations in bimetric theory are the manifestation of the non-linear Vainshtein mechanism on an FRW background. The spin-2 mass serves as the cosmological Vainshtein scale in this case. This allows us to quantitatively address early universe cosmology. In particular, in a global analysis, we study data from the cosmic microwave background radiation and local measurements of the Hubble flow. We show that bimetric cosmology resolves the discrepancy in the local and early-time measurements of the Hubble scale via an effective phanto"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.09449","kind":"arxiv","version":2},"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/1912.09449/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":"2026-07-05T02:03:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xNZjr3qmiBdZviCKqHcMaudZ5lVl7qvibfvk48mpUjITTdOeVBJulpdLbIHHH9A+lXZdx+inZBnQKdRr5JJVCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T01:10:41.858967Z"},"content_sha256":"d9acdffdbbdd31679eff202ea383a14f8fd7447fef59e8c2b3721c6a5b38627a","schema_version":"1.0","event_id":"sha256:d9acdffdbbdd31679eff202ea383a14f8fd7447fef59e8c2b3721c6a5b38627a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/bundle.json","state_url":"https://pith.science/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/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":"2026-08-20T01:10:41Z","links":{"resolver":"https://pith.science/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC","bundle":"https://pith.science/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/bundle.json","state":"https://pith.science/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BQ5RCF5EHDX6I7IW7DFV5PJ6MC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BQ5RCF5EHDX6I7IW7DFV5PJ6MC","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":"f120928d0705d2cf09a0eef9128547a9afef94702e215ca6b6036c58a9cbefa0","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-19T18:25:08Z","title_canon_sha256":"cdc05d5dd6a643acaa28121dda309d29aac6b5f12030d930236cd6916e79b983"},"schema_version":"1.0","source":{"id":"1912.09449","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.09449","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"arxiv_version","alias_value":"1912.09449v2","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.09449","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_12","alias_value":"BQ5RCF5EHDX6","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_16","alias_value":"BQ5RCF5EHDX6I7IW","created_at":"2026-07-05T02:03:25Z"},{"alias_kind":"pith_short_8","alias_value":"BQ5RCF5E","created_at":"2026-07-05T02:03:25Z"}],"graph_snapshots":[{"event_id":"sha256:d9acdffdbbdd31679eff202ea383a14f8fd7447fef59e8c2b3721c6a5b38627a","target":"graph","created_at":"2026-07-05T02:03:25Z","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/1912.09449/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate that the instabilities in linear cosmological perturbations in bimetric theory are the manifestation of the non-linear Vainshtein mechanism on an FRW background. The spin-2 mass serves as the cosmological Vainshtein scale in this case. This allows us to quantitatively address early universe cosmology. In particular, in a global analysis, we study data from the cosmic microwave background radiation and local measurements of the Hubble flow. We show that bimetric cosmology resolves the discrepancy in the local and early-time measurements of the Hubble scale via an effective phanto","authors_text":"Angnis Schmidt-May, Juri Smirnov, Marvin L\\\"uben","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-19T18:25:08Z","title":"Vainshtein Screening in Bimetric Cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.09449","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":"sha256:72ed3ed80f6184f4174224cf1946f14de0def6be9e20e0f5060735f2b3e15389","target":"record","created_at":"2026-07-05T02:03:25Z","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":"f120928d0705d2cf09a0eef9128547a9afef94702e215ca6b6036c58a9cbefa0","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-19T18:25:08Z","title_canon_sha256":"cdc05d5dd6a643acaa28121dda309d29aac6b5f12030d930236cd6916e79b983"},"schema_version":"1.0","source":{"id":"1912.09449","kind":"arxiv","version":2}},"canonical_sha256":"0c3b1117a438efe47d16f8cb5ebd3e608476f66d1867a402a9ff518813d24b98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c3b1117a438efe47d16f8cb5ebd3e608476f66d1867a402a9ff518813d24b98","first_computed_at":"2026-07-05T02:03:25.079493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:03:25.079493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"trPQekh1ODx3CA6bXdR4EvQruz0faV8ep1bbslO+Y99Y9SAtyyzJXuLlqDWedyAWPuVJ4uy9j+qRRAAO/761Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:03:25.079845Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.09449","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72ed3ed80f6184f4174224cf1946f14de0def6be9e20e0f5060735f2b3e15389","sha256:d9acdffdbbdd31679eff202ea383a14f8fd7447fef59e8c2b3721c6a5b38627a"],"state_sha256":"1e96963a12b4dab31ade7ba9058f868cf2d48045225e4a6c47a26a44f5a1f937"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jNu9sBNQgnxaRKakE3sepT5eMeUP1vmOLWr+wcY4C3jF2H2RmTxYyUNdopZhcrVtUqseWvkKILUNmDjJhV/IDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T01:10:41.864507Z","bundle_sha256":"280c4a5ff05dc7387f9af5fa513a0ac2302e2058302ee04ab55a1467d9e0a8e5"}}