{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:OIRDM62A4FVNJRIMG5HVUXR7WZ","short_pith_number":"pith:OIRDM62A","schema_version":"1.0","canonical_sha256":"7222367b40e16ad4c50c374f5a5e3fb652b5b4becbfb848e7a36973b335bf454","source":{"kind":"arxiv","id":"1312.1426","version":2},"attestation_state":"computed","paper":{"title":"Quantum Fisher information as signature of superradiant quantum phase transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","physics.atom-ph","physics.data-an","physics.optics"],"primary_cat":"quant-ph","authors_text":"F. Nori, G. R. Jin, L. N. Wu, N. Lambert, T. L. Wang, W. Yang","submitted_at":"2013-12-05T03:42:21Z","abstract_excerpt":"The single-mode Dicke model is well-known to undergo a quantum phase transition from the so-called normal phase to the supperradiant phase (hereinafter called the \"superradiant quantum phase transition\"). Normally, quantum phase transitions are closely related to the critical behavior of quantities such as entanglement, quantum fluctuations, and fidelity. In this paper, we study quantum Fisher information (QFI) of the field mode and that of the atoms in the ground state of the Dicke Hamiltonian. For finite and large enough number of atoms, our numerical results show that near the critical atom"},"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":"1312.1426","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-12-05T03:42:21Z","cross_cats_sorted":["cond-mat.quant-gas","physics.atom-ph","physics.data-an","physics.optics"],"title_canon_sha256":"0fac37411b55055a4ac39c5b8801f9663106ef3625cba00e4a3220ce67ad706e","abstract_canon_sha256":"732169ac6808d903e00320a671ef0e2045ab1eeeb8c315e29fc37e0b52da627a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:02.288114Z","signature_b64":"SsKvg48dmXyvk2i4iXbvCEb9OAqPVOsis89Oybj9qr+L+2rnVFbr8vlrMc1DfSYPGc8CtZpH004ugYb42r75DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7222367b40e16ad4c50c374f5a5e3fb652b5b4becbfb848e7a36973b335bf454","last_reissued_at":"2026-05-18T02:48:02.287574Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:02.287574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum Fisher information as signature of superradiant quantum phase transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","physics.atom-ph","physics.data-an","physics.optics"],"primary_cat":"quant-ph","authors_text":"F. Nori, G. R. Jin, L. N. Wu, N. Lambert, T. L. Wang, W. Yang","submitted_at":"2013-12-05T03:42:21Z","abstract_excerpt":"The single-mode Dicke model is well-known to undergo a quantum phase transition from the so-called normal phase to the supperradiant phase (hereinafter called the \"superradiant quantum phase transition\"). Normally, quantum phase transitions are closely related to the critical behavior of quantities such as entanglement, quantum fluctuations, and fidelity. In this paper, we study quantum Fisher information (QFI) of the field mode and that of the atoms in the ground state of the Dicke Hamiltonian. For finite and large enough number of atoms, our numerical results show that near the critical atom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1426","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":"1312.1426","created_at":"2026-05-18T02:48:02.287668+00:00"},{"alias_kind":"arxiv_version","alias_value":"1312.1426v2","created_at":"2026-05-18T02:48:02.287668+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1426","created_at":"2026-05-18T02:48:02.287668+00:00"},{"alias_kind":"pith_short_12","alias_value":"OIRDM62A4FVN","created_at":"2026-05-18T12:27:54.935989+00:00"},{"alias_kind":"pith_short_16","alias_value":"OIRDM62A4FVNJRIM","created_at":"2026-05-18T12:27:54.935989+00:00"},{"alias_kind":"pith_short_8","alias_value":"OIRDM62A","created_at":"2026-05-18T12:27:54.935989+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/OIRDM62A4FVNJRIMG5HVUXR7WZ","json":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ.json","graph_json":"https://pith.science/api/pith-number/OIRDM62A4FVNJRIMG5HVUXR7WZ/graph.json","events_json":"https://pith.science/api/pith-number/OIRDM62A4FVNJRIMG5HVUXR7WZ/events.json","paper":"https://pith.science/paper/OIRDM62A"},"agent_actions":{"view_html":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ","download_json":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ.json","view_paper":"https://pith.science/paper/OIRDM62A","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1312.1426&json=true","fetch_graph":"https://pith.science/api/pith-number/OIRDM62A4FVNJRIMG5HVUXR7WZ/graph.json","fetch_events":"https://pith.science/api/pith-number/OIRDM62A4FVNJRIMG5HVUXR7WZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ/action/storage_attestation","attest_author":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ/action/author_attestation","sign_citation":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ/action/citation_signature","submit_replication":"https://pith.science/pith/OIRDM62A4FVNJRIMG5HVUXR7WZ/action/replication_record"}},"created_at":"2026-05-18T02:48:02.287668+00:00","updated_at":"2026-05-18T02:48:02.287668+00:00"}