{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:YT55J5CLRKHWSG3UFR7PURIG6Q","short_pith_number":"pith:YT55J5CL","canonical_record":{"source":{"id":"astro-ph/0402067","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-03T10:53:27Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"a928c048eab8f262630d087c6e54d8264830c9a1eaaeaa6506be3ff85a094f22","abstract_canon_sha256":"e8caa8933223c2ac81fc2feaa55e60e10f81a0ef493aedea666d9325988e7f10"},"schema_version":"1.0"},"canonical_sha256":"c4fbd4f44b8a8f691b742c7efa4506f43c3983fa49e255daa3a2da311cee7a94","source":{"kind":"arxiv","id":"astro-ph/0402067","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0402067","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402067v1","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402067","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_12","alias_value":"YT55J5CLRKHW","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_16","alias_value":"YT55J5CLRKHWSG3U","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_8","alias_value":"YT55J5CL","created_at":"2026-07-04T16:42:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:YT55J5CLRKHWSG3UFR7PURIG6Q","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0402067","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-03T10:53:27Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"a928c048eab8f262630d087c6e54d8264830c9a1eaaeaa6506be3ff85a094f22","abstract_canon_sha256":"e8caa8933223c2ac81fc2feaa55e60e10f81a0ef493aedea666d9325988e7f10"},"schema_version":"1.0"},"canonical_sha256":"c4fbd4f44b8a8f691b742c7efa4506f43c3983fa49e255daa3a2da311cee7a94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:42:57.548792Z","signature_b64":"Vmh8fecTUm78XgTymm4d/t45hzK2/pICSA0BKIttdPn4XrN0CbIT2/YOuD30jx7wMTtA4sR0SXYmyR0EC3YICA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4fbd4f44b8a8f691b742c7efa4506f43c3983fa49e255daa3a2da311cee7a94","last_reissued_at":"2026-07-04T16:42:57.548299Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:42:57.548299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0402067","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":"2026-07-04T16:42:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"epJjGlLFQr/M5AOdwEHZ1m1YrD/WJgy+2SKnwUfy0SAFMGfn0BMdmvWpnhlLq5lkrCKxmlgnGKfkMrukRKcUCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T00:21:57.727534Z"},"content_sha256":"69e78cd6c12b125deb13b3f60fa0e33f8301ab931cab7528410289b6b8e44c9c","schema_version":"1.0","event_id":"sha256:69e78cd6c12b125deb13b3f60fa0e33f8301ab931cab7528410289b6b8e44c9c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:YT55J5CLRKHWSG3UFR7PURIG6Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CMB constraints on interacting cosmological models","license":"","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph","authors_text":"Diego Pavon, Somasri Sen, Winfried Zimdahl","submitted_at":"2004-02-03T10:53:27Z","abstract_excerpt":"Non-canonical scaling of the form $\\rho_{x} \\propto \\rho_{m} a^{\\xi}$, where $\\rho_{x}$ and $\\rho_{m}$ are the energy densities of dark energy and dark matter, respectively, provides a natural way to address the coincidence problem -why the two densities are comparable today. This non-canonical scaling is achieved by a suitable interaction between the dark components. We study the observational constraints imposed on such models from the cosmic microwave background (CMB) anisotropy spectrum. Using the recent WMAP results for the location of the CMB peaks, we determine the admissible parameter "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402067","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/astro-ph/0402067/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":"2026-07-04T16:42:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZNYFDV0qSp+k0Mb//D8jdg6LJjIgFU3l3T19i/dmdVvnldMpSEPjCb/xVt/Lv17TJJSTSSSsG3x7cgxj/w9iDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T00:21:57.728048Z"},"content_sha256":"2597b9b602187a9cefd40c8ca21efe41c207d11164b9d6a654bf4472b7e7027d","schema_version":"1.0","event_id":"sha256:2597b9b602187a9cefd40c8ca21efe41c207d11164b9d6a654bf4472b7e7027d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/bundle.json","state_url":"https://pith.science/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/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":"2026-08-15T00:21:57Z","links":{"resolver":"https://pith.science/pith/YT55J5CLRKHWSG3UFR7PURIG6Q","bundle":"https://pith.science/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/bundle.json","state":"https://pith.science/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YT55J5CLRKHWSG3UFR7PURIG6Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:YT55J5CLRKHWSG3UFR7PURIG6Q","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":"e8caa8933223c2ac81fc2feaa55e60e10f81a0ef493aedea666d9325988e7f10","cross_cats_sorted":["gr-qc","hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-03T10:53:27Z","title_canon_sha256":"a928c048eab8f262630d087c6e54d8264830c9a1eaaeaa6506be3ff85a094f22"},"schema_version":"1.0","source":{"id":"astro-ph/0402067","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0402067","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402067v1","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402067","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_12","alias_value":"YT55J5CLRKHW","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_16","alias_value":"YT55J5CLRKHWSG3U","created_at":"2026-07-04T16:42:57Z"},{"alias_kind":"pith_short_8","alias_value":"YT55J5CL","created_at":"2026-07-04T16:42:57Z"}],"graph_snapshots":[{"event_id":"sha256:2597b9b602187a9cefd40c8ca21efe41c207d11164b9d6a654bf4472b7e7027d","target":"graph","created_at":"2026-07-04T16:42:57Z","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/astro-ph/0402067/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-canonical scaling of the form $\\rho_{x} \\propto \\rho_{m} a^{\\xi}$, where $\\rho_{x}$ and $\\rho_{m}$ are the energy densities of dark energy and dark matter, respectively, provides a natural way to address the coincidence problem -why the two densities are comparable today. This non-canonical scaling is achieved by a suitable interaction between the dark components. We study the observational constraints imposed on such models from the cosmic microwave background (CMB) anisotropy spectrum. Using the recent WMAP results for the location of the CMB peaks, we determine the admissible parameter ","authors_text":"Diego Pavon, Somasri Sen, Winfried Zimdahl","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-02-03T10:53:27Z","title":"CMB constraints on interacting cosmological models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402067","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":"sha256:69e78cd6c12b125deb13b3f60fa0e33f8301ab931cab7528410289b6b8e44c9c","target":"record","created_at":"2026-07-04T16:42:57Z","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":"e8caa8933223c2ac81fc2feaa55e60e10f81a0ef493aedea666d9325988e7f10","cross_cats_sorted":["gr-qc","hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-03T10:53:27Z","title_canon_sha256":"a928c048eab8f262630d087c6e54d8264830c9a1eaaeaa6506be3ff85a094f22"},"schema_version":"1.0","source":{"id":"astro-ph/0402067","kind":"arxiv","version":1}},"canonical_sha256":"c4fbd4f44b8a8f691b742c7efa4506f43c3983fa49e255daa3a2da311cee7a94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4fbd4f44b8a8f691b742c7efa4506f43c3983fa49e255daa3a2da311cee7a94","first_computed_at":"2026-07-04T16:42:57.548299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:42:57.548299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vmh8fecTUm78XgTymm4d/t45hzK2/pICSA0BKIttdPn4XrN0CbIT2/YOuD30jx7wMTtA4sR0SXYmyR0EC3YICA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:42:57.548792Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0402067","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69e78cd6c12b125deb13b3f60fa0e33f8301ab931cab7528410289b6b8e44c9c","sha256:2597b9b602187a9cefd40c8ca21efe41c207d11164b9d6a654bf4472b7e7027d"],"state_sha256":"d6e16af59615cbfacba9713b722a16113fac22e761256e289a59f4e1910e5b75"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7oziP3lkNOF/nvgDEvcOikiLb6N7wyWdN9AP8aCLyLSt6WYCn9S4+cOZbFy3i34LaZuUzsKbvsPxDN+NhB9YDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T00:21:57.734721Z","bundle_sha256":"9435c839c625e0d6173e322296ecb7ff000fb322b6a8ecd0eeb12f43d35b3268"}}