{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2O5DVH33SU4U2XH6VZ6T2VHWCF","short_pith_number":"pith:2O5DVH33","canonical_record":{"source":{"id":"1507.07571","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-07-27T20:08:02Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"dcd04a2e8d13ac0e797ea1762c88d0097f0e5e70276d683348846997245813d3","abstract_canon_sha256":"0874708e72d94f02e244e7f6bf928db8d55b945e255d40c2eefe0497d90d5593"},"schema_version":"1.0"},"canonical_sha256":"d3ba3a9f7b95394d5cfeae7d3d54f611518cf3293937ce193f9f6565729c98ca","source":{"kind":"arxiv","id":"1507.07571","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07571","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07571v3","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07571","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"pith_short_12","alias_value":"2O5DVH33SU4U","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2O5DVH33SU4U2XH6","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2O5DVH33","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2O5DVH33SU4U2XH6VZ6T2VHWCF","target":"record","payload":{"canonical_record":{"source":{"id":"1507.07571","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-07-27T20:08:02Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"dcd04a2e8d13ac0e797ea1762c88d0097f0e5e70276d683348846997245813d3","abstract_canon_sha256":"0874708e72d94f02e244e7f6bf928db8d55b945e255d40c2eefe0497d90d5593"},"schema_version":"1.0"},"canonical_sha256":"d3ba3a9f7b95394d5cfeae7d3d54f611518cf3293937ce193f9f6565729c98ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:58.334030Z","signature_b64":"wochkYLPqoIpyZ/2pL8RJR8QWv70+lOAaCtJgFXHERNvf296e/5UTYxiZB8vQzcUGu6QzUf30LVPO7Qv/bjnAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3ba3a9f7b95394d5cfeae7d3d54f611518cf3293937ce193f9f6565729c98ca","last_reissued_at":"2026-05-18T00:44:58.333507Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:58.333507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.07571","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ICouScLGxA9pDUJ5Y63DFi4nIhsBFYfx1kKYb5YONfxX0tHgHctSF/1XECkhXTK3+tg0ROQBQTbPSSEEAFC8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T21:45:14.640992Z"},"content_sha256":"218ab8399b55b079ef224aace74b0b8f76d5bd7c6a604ff9a2c4ece5372e1505","schema_version":"1.0","event_id":"sha256:218ab8399b55b079ef224aace74b0b8f76d5bd7c6a604ff9a2c4ece5372e1505"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2O5DVH33SU4U2XH6VZ6T2VHWCF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phantom Dark Ghost in Einstein-Cartan Gravity","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":"Mariam Bouhmadi-L\\'opez, Pisin Chen, Yu-Chiao Chang","submitted_at":"2015-07-27T20:08:02Z","abstract_excerpt":"A class of dynamical dark energy models is constructed through an extended version of fermion fields corresponding to phantom dark ghost spinors, which are spin one half with mass dimension one. We find that if these spinors interact with torsion fields in a homogeneous and isotropic universe, then it does not imply any future dark energy singularity or any abrupt event, though the fermion has a negative kinetic energy. In fact, the equation of state of this dark energy model will asymptotically approach the value $w=-1$ from above without crossing the phantom divide and inducing therefore a d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07571","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:44:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oeHLmhef5eGvn79AIC4C4RWRcJwPP2lHO7WE6bqbk5a7KxhS+TzC5LovmS1huX/kh6txEFng/PLDFMBiVpBhBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T21:45:14.641750Z"},"content_sha256":"a4dcf76e4ab5d171b6f741c804e11329b0c0c2f5e37214d60e84e01899b3237e","schema_version":"1.0","event_id":"sha256:a4dcf76e4ab5d171b6f741c804e11329b0c0c2f5e37214d60e84e01899b3237e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/bundle.json","state_url":"https://pith.science/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/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":"2026-06-11T21:45:14Z","links":{"resolver":"https://pith.science/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF","bundle":"https://pith.science/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/bundle.json","state":"https://pith.science/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2O5DVH33SU4U2XH6VZ6T2VHWCF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2O5DVH33SU4U2XH6VZ6T2VHWCF","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":"0874708e72d94f02e244e7f6bf928db8d55b945e255d40c2eefe0497d90d5593","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":"2015-07-27T20:08:02Z","title_canon_sha256":"dcd04a2e8d13ac0e797ea1762c88d0097f0e5e70276d683348846997245813d3"},"schema_version":"1.0","source":{"id":"1507.07571","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07571","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07571v3","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07571","created_at":"2026-05-18T00:44:58Z"},{"alias_kind":"pith_short_12","alias_value":"2O5DVH33SU4U","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2O5DVH33SU4U2XH6","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2O5DVH33","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:a4dcf76e4ab5d171b6f741c804e11329b0c0c2f5e37214d60e84e01899b3237e","target":"graph","created_at":"2026-05-18T00:44:58Z","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":"A class of dynamical dark energy models is constructed through an extended version of fermion fields corresponding to phantom dark ghost spinors, which are spin one half with mass dimension one. We find that if these spinors interact with torsion fields in a homogeneous and isotropic universe, then it does not imply any future dark energy singularity or any abrupt event, though the fermion has a negative kinetic energy. In fact, the equation of state of this dark energy model will asymptotically approach the value $w=-1$ from above without crossing the phantom divide and inducing therefore a d","authors_text":"Mariam Bouhmadi-L\\'opez, Pisin Chen, Yu-Chiao Chang","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":"2015-07-27T20:08:02Z","title":"Phantom Dark Ghost in Einstein-Cartan Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07571","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":"sha256:218ab8399b55b079ef224aace74b0b8f76d5bd7c6a604ff9a2c4ece5372e1505","target":"record","created_at":"2026-05-18T00:44:58Z","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":"0874708e72d94f02e244e7f6bf928db8d55b945e255d40c2eefe0497d90d5593","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":"2015-07-27T20:08:02Z","title_canon_sha256":"dcd04a2e8d13ac0e797ea1762c88d0097f0e5e70276d683348846997245813d3"},"schema_version":"1.0","source":{"id":"1507.07571","kind":"arxiv","version":3}},"canonical_sha256":"d3ba3a9f7b95394d5cfeae7d3d54f611518cf3293937ce193f9f6565729c98ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3ba3a9f7b95394d5cfeae7d3d54f611518cf3293937ce193f9f6565729c98ca","first_computed_at":"2026-05-18T00:44:58.333507Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:58.333507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wochkYLPqoIpyZ/2pL8RJR8QWv70+lOAaCtJgFXHERNvf296e/5UTYxiZB8vQzcUGu6QzUf30LVPO7Qv/bjnAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:58.334030Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.07571","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:218ab8399b55b079ef224aace74b0b8f76d5bd7c6a604ff9a2c4ece5372e1505","sha256:a4dcf76e4ab5d171b6f741c804e11329b0c0c2f5e37214d60e84e01899b3237e"],"state_sha256":"5eedfb848fb90f0d4e63e43322d370ccfa9ad909a770f9f85c0f8097e0a71787"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"grTbwZVNzUstb1f1eMfM4UDr+yqT8EjcEEz0uwe7k+VH/LSZYRi3h4DAy21seZebebMZ+561JIrP1Cs1xpQcBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T21:45:14.646407Z","bundle_sha256":"56994391dd8a031c0f44a020136e341c764a6b92729f61e5124d2012866ac8ac"}}