{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:AKCXDPQX4BAGMOS7V5CGPZSPOY","short_pith_number":"pith:AKCXDPQX","schema_version":"1.0","canonical_sha256":"028571be17e040663a5faf4467e64f7635cf4f577b9849184c2e12590cf77498","source":{"kind":"arxiv","id":"cond-mat/0206041","version":1},"attestation_state":"computed","paper":{"title":"Macroscopic Quantum Coherence in a repulsive Bose-Einstein condensate","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"A. Montina, F.T. Arecchi","submitted_at":"2002-06-04T13:39:53Z","abstract_excerpt":"We consider a Bose-Einstein bicondensate (BEC) of $^{87}Rb$, trapped in two different internal levels, in a situation where the density undergoes a symmetry breaking in momentum space. This occurs for a suitable number of condensed atoms within a double well dispersion curve, obtained by Raman coupling two internal states with two tilted and detuned light fields. Evidence of bistability results from the Gross-Pitaevskii equation. By second quantization, we evaluate the tunneling rate between the two asymmetric states; the effects of losses on coherence are also considered."},"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":"cond-mat/0206041","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.quant-gas","submitted_at":"2002-06-04T13:39:53Z","cross_cats_sorted":[],"title_canon_sha256":"b62218939eae0991d4ae75e92dadd77fb680beb7466f8cf6722af792fd3d86d2","abstract_canon_sha256":"e64db4983669b6e38f4d02f05efe23bf927dda6a8acdf1fbcf0ed330b7fa1a99"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:22.500272Z","signature_b64":"5B3zN6tKUJ1MrE4950Aqf/dqnXTbBhlmt1BMJtVs+MUBwZtokF3ozQpZoBFaF8158dV2WDXwS8Qfu5ryJ4yjBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"028571be17e040663a5faf4467e64f7635cf4f577b9849184c2e12590cf77498","last_reissued_at":"2026-05-18T04:08:22.499885Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:22.499885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Macroscopic Quantum Coherence in a repulsive Bose-Einstein condensate","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"A. Montina, F.T. Arecchi","submitted_at":"2002-06-04T13:39:53Z","abstract_excerpt":"We consider a Bose-Einstein bicondensate (BEC) of $^{87}Rb$, trapped in two different internal levels, in a situation where the density undergoes a symmetry breaking in momentum space. This occurs for a suitable number of condensed atoms within a double well dispersion curve, obtained by Raman coupling two internal states with two tilted and detuned light fields. Evidence of bistability results from the Gross-Pitaevskii equation. By second quantization, we evaluate the tunneling rate between the two asymmetric states; the effects of losses on coherence are also considered."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0206041","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":""},"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":"cond-mat/0206041","created_at":"2026-05-18T04:08:22.499943+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0206041v1","created_at":"2026-05-18T04:08:22.499943+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0206041","created_at":"2026-05-18T04:08:22.499943+00:00"},{"alias_kind":"pith_short_12","alias_value":"AKCXDPQX4BAG","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_16","alias_value":"AKCXDPQX4BAGMOS7","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_8","alias_value":"AKCXDPQX","created_at":"2026-05-18T12:25:50.845339+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/AKCXDPQX4BAGMOS7V5CGPZSPOY","json":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY.json","graph_json":"https://pith.science/api/pith-number/AKCXDPQX4BAGMOS7V5CGPZSPOY/graph.json","events_json":"https://pith.science/api/pith-number/AKCXDPQX4BAGMOS7V5CGPZSPOY/events.json","paper":"https://pith.science/paper/AKCXDPQX"},"agent_actions":{"view_html":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY","download_json":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY.json","view_paper":"https://pith.science/paper/AKCXDPQX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0206041&json=true","fetch_graph":"https://pith.science/api/pith-number/AKCXDPQX4BAGMOS7V5CGPZSPOY/graph.json","fetch_events":"https://pith.science/api/pith-number/AKCXDPQX4BAGMOS7V5CGPZSPOY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY/action/storage_attestation","attest_author":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY/action/author_attestation","sign_citation":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY/action/citation_signature","submit_replication":"https://pith.science/pith/AKCXDPQX4BAGMOS7V5CGPZSPOY/action/replication_record"}},"created_at":"2026-05-18T04:08:22.499943+00:00","updated_at":"2026-05-18T04:08:22.499943+00:00"}