{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:2SYFQXIKZNSCQRITY3WV34G2RI","short_pith_number":"pith:2SYFQXIK","schema_version":"1.0","canonical_sha256":"d4b0585d0acb64284513c6ed5df0da8a04e3dfaa1cc1cf41e1dcbf5b6625ca0d","source":{"kind":"arxiv","id":"1007.4947","version":2},"attestation_state":"computed","paper":{"title":"Dark-dark solitons and modulational instability in miscible, two-component Bose-Einstein condensates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.PS"],"primary_cat":"cond-mat.quant-gas","authors_text":"C. Hamner, J.J. Chang, M. A. Hoefer, P. Engels","submitted_at":"2010-07-28T12:42:24Z","abstract_excerpt":"We investigate the dynamics of two miscible superfluids experiencing fast counterflow in a narrow channel. The superfluids are formed by two distinguishable components of a trapped dilute-gas Bose-Einstein condensate (BEC). The onset of counterflow-induced modulational instability throughout the cloud is observed and shown to lead to the proliferation of dark-dark vector solitons. These solitons, which we observe for the first time in a BEC, do not exist in single-component systems, exhibit intriguing beating dynamics and can experience a transverse instability leading to vortex line structure"},"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":"1007.4947","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2010-07-28T12:42:24Z","cross_cats_sorted":["nlin.PS"],"title_canon_sha256":"b93590d9f71f2c82edc761122bbaf3c55ca759b7dd5c33ea5201aa8fc677323a","abstract_canon_sha256":"7827f0c2502d88cde641ed491042ca32ec439918394c74d93e69a3611a49c697"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:44.832218Z","signature_b64":"+sZMPcgcb2l3t8RcUPuEP2j64oKNWI82MiHq7oS/oKDYwnSMa0nT1exfAtWViU6qnGS0+nZs/8FVDkM8QXjyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4b0585d0acb64284513c6ed5df0da8a04e3dfaa1cc1cf41e1dcbf5b6625ca0d","last_reissued_at":"2026-05-18T04:08:44.831690Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:44.831690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dark-dark solitons and modulational instability in miscible, two-component Bose-Einstein condensates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.PS"],"primary_cat":"cond-mat.quant-gas","authors_text":"C. Hamner, J.J. Chang, M. A. Hoefer, P. Engels","submitted_at":"2010-07-28T12:42:24Z","abstract_excerpt":"We investigate the dynamics of two miscible superfluids experiencing fast counterflow in a narrow channel. The superfluids are formed by two distinguishable components of a trapped dilute-gas Bose-Einstein condensate (BEC). The onset of counterflow-induced modulational instability throughout the cloud is observed and shown to lead to the proliferation of dark-dark vector solitons. These solitons, which we observe for the first time in a BEC, do not exist in single-component systems, exhibit intriguing beating dynamics and can experience a transverse instability leading to vortex line structure"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4947","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":""},"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":"1007.4947","created_at":"2026-05-18T04:08:44.831780+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.4947v2","created_at":"2026-05-18T04:08:44.831780+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4947","created_at":"2026-05-18T04:08:44.831780+00:00"},{"alias_kind":"pith_short_12","alias_value":"2SYFQXIKZNSC","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_16","alias_value":"2SYFQXIKZNSCQRIT","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_8","alias_value":"2SYFQXIK","created_at":"2026-05-18T12:26:03.138858+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI","json":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI.json","graph_json":"https://pith.science/api/pith-number/2SYFQXIKZNSCQRITY3WV34G2RI/graph.json","events_json":"https://pith.science/api/pith-number/2SYFQXIKZNSCQRITY3WV34G2RI/events.json","paper":"https://pith.science/paper/2SYFQXIK"},"agent_actions":{"view_html":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI","download_json":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI.json","view_paper":"https://pith.science/paper/2SYFQXIK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.4947&json=true","fetch_graph":"https://pith.science/api/pith-number/2SYFQXIKZNSCQRITY3WV34G2RI/graph.json","fetch_events":"https://pith.science/api/pith-number/2SYFQXIKZNSCQRITY3WV34G2RI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI/action/storage_attestation","attest_author":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI/action/author_attestation","sign_citation":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI/action/citation_signature","submit_replication":"https://pith.science/pith/2SYFQXIKZNSCQRITY3WV34G2RI/action/replication_record"}},"created_at":"2026-05-18T04:08:44.831780+00:00","updated_at":"2026-05-18T04:08:44.831780+00:00"}