{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:25TQ2IKEUMSEPVP5P2JVO4PUJS","short_pith_number":"pith:25TQ2IKE","schema_version":"1.0","canonical_sha256":"d7670d2144a32447d5fd7e935771f44ca0a94c56fb7bb702611108459212900a","source":{"kind":"arxiv","id":"1807.09745","version":3},"attestation_state":"computed","paper":{"title":"Energy condition respecting warp drives: The role of spin in Einstein-Cartan theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Andrew DeBenedictis, Sasa Ilijic","submitted_at":"2018-07-25T17:49:28Z","abstract_excerpt":"In this paper we study the so called \"warp drive\" spacetimes within the $U_{4}$ Riemann-Cartan manifolds of Einstein-Cartan theory. Specifically, the role that spin may play with respect to energy condition violation is considered. It turns out that with the addition of spin, the torsion terms in Einstein-Cartan gravity do allow for energy condition respecting warp drives. Limits are derived which minimize the amount of spin required in order to have a weak/null-energy condition respecting system. This is done both for the traditional Alcubierre warp drive as well as for the modified warp driv"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1807.09745","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-07-25T17:49:28Z","cross_cats_sorted":[],"title_canon_sha256":"55e185be836ee4ca9f6590b71105b5461b8d94102e3ccdf2f679816612a06906","abstract_canon_sha256":"37e71d24546a4c364555ec221afa2d9a0ed71318556e6a617b4cdb0963aaf8ee"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:55.615614Z","signature_b64":"mSmlcQgaIAuyeqmItLUwVvl8xKLShSvaZfA+aoImMelsOuSHHyXGhPqiiAWDh+TTnZDyQakGZf0ShcZT329tDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7670d2144a32447d5fd7e935771f44ca0a94c56fb7bb702611108459212900a","last_reissued_at":"2026-05-18T00:03:55.615079Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:55.615079Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Energy condition respecting warp drives: The role of spin in Einstein-Cartan theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Andrew DeBenedictis, Sasa Ilijic","submitted_at":"2018-07-25T17:49:28Z","abstract_excerpt":"In this paper we study the so called \"warp drive\" spacetimes within the $U_{4}$ Riemann-Cartan manifolds of Einstein-Cartan theory. Specifically, the role that spin may play with respect to energy condition violation is considered. It turns out that with the addition of spin, the torsion terms in Einstein-Cartan gravity do allow for energy condition respecting warp drives. Limits are derived which minimize the amount of spin required in order to have a weak/null-energy condition respecting system. This is done both for the traditional Alcubierre warp drive as well as for the modified warp driv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09745","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1807.09745","created_at":"2026-05-18T00:03:55.615163+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.09745v3","created_at":"2026-05-18T00:03:55.615163+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09745","created_at":"2026-05-18T00:03:55.615163+00:00"},{"alias_kind":"pith_short_12","alias_value":"25TQ2IKEUMSE","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_16","alias_value":"25TQ2IKEUMSEPVP5","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_8","alias_value":"25TQ2IKE","created_at":"2026-05-18T12:31:59.375834+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.26360","citing_title":"Torsional black holes and wormholes in Einstein-Cartan-Maxwell gravity with a conformal scalar field","ref_index":60,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS","json":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS.json","graph_json":"https://pith.science/api/pith-number/25TQ2IKEUMSEPVP5P2JVO4PUJS/graph.json","events_json":"https://pith.science/api/pith-number/25TQ2IKEUMSEPVP5P2JVO4PUJS/events.json","paper":"https://pith.science/paper/25TQ2IKE"},"agent_actions":{"view_html":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS","download_json":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS.json","view_paper":"https://pith.science/paper/25TQ2IKE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.09745&json=true","fetch_graph":"https://pith.science/api/pith-number/25TQ2IKEUMSEPVP5P2JVO4PUJS/graph.json","fetch_events":"https://pith.science/api/pith-number/25TQ2IKEUMSEPVP5P2JVO4PUJS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS/action/storage_attestation","attest_author":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS/action/author_attestation","sign_citation":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS/action/citation_signature","submit_replication":"https://pith.science/pith/25TQ2IKEUMSEPVP5P2JVO4PUJS/action/replication_record"}},"created_at":"2026-05-18T00:03:55.615163+00:00","updated_at":"2026-05-18T00:03:55.615163+00:00"}