{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:54GSB2RPFEIAAYWNKRM7TEOADM","short_pith_number":"pith:54GSB2RP","canonical_record":{"source":{"id":"1005.3884","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-05-21T04:49:09Z","cross_cats_sorted":[],"title_canon_sha256":"abb47a7e95757ca269c80aa04df10b7157e2481804eacd7741333ee95eb6abf7","abstract_canon_sha256":"6d793c8466791efc0ffbdfa8230a250e3d705705e16909753de20c27ee2567b3"},"schema_version":"1.0"},"canonical_sha256":"ef0d20ea2f29100062cd5459f991c01b3157f848553df9801f59db59de2492b8","source":{"kind":"arxiv","id":"1005.3884","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3884","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3884v2","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3884","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"pith_short_12","alias_value":"54GSB2RPFEIA","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"54GSB2RPFEIAAYWN","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"54GSB2RP","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:54GSB2RPFEIAAYWNKRM7TEOADM","target":"record","payload":{"canonical_record":{"source":{"id":"1005.3884","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-05-21T04:49:09Z","cross_cats_sorted":[],"title_canon_sha256":"abb47a7e95757ca269c80aa04df10b7157e2481804eacd7741333ee95eb6abf7","abstract_canon_sha256":"6d793c8466791efc0ffbdfa8230a250e3d705705e16909753de20c27ee2567b3"},"schema_version":"1.0"},"canonical_sha256":"ef0d20ea2f29100062cd5459f991c01b3157f848553df9801f59db59de2492b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:37:33.082863Z","signature_b64":"8rWIr6yrPCWXcdJqhVDtCwYdKPdQeZ3CrDf4etHrSoaeN3nttv/teeb9/3XFRDhWd6HqYNuHS4gpEnJ1vp2IAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef0d20ea2f29100062cd5459f991c01b3157f848553df9801f59db59de2492b8","last_reissued_at":"2026-05-18T04:37:33.082164Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:37:33.082164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.3884","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:37:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FDKZEn7ppdJtNGZV0wVTwbHLaagxJZwwaIzKrn25+aYPd7ZG3fm/Y2a+g4IT8z8JKO+HxMC11J9pA/3tbdglAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:14:33.026895Z"},"content_sha256":"2e1ce13e679b31c5a8a1faa6df8324ae5dc2f2bbf5fb1ba3a37bd626f0e11cbe","schema_version":"1.0","event_id":"sha256:2e1ce13e679b31c5a8a1faa6df8324ae5dc2f2bbf5fb1ba3a37bd626f0e11cbe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:54GSB2RPFEIAAYWNKRM7TEOADM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum phase transition of nonlinear light in the finite size Dicke Hamiltonian","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. M. Rodr\\'iguez-Lara, Ray-Kuang Lee","submitted_at":"2010-05-21T04:49:09Z","abstract_excerpt":"We study the quantum phase transition of a N two-level atomic ensemble interacting with an optical degenerate parametric process, which can be described by the finite size Dicke Hamiltonian plus counter-rotating and quadratic field terms. Analytical closed forms of the critical coupling value and their corresponding separable ground states are derived in the weak and strong coupling regimes. The existence of bipartite entanglement between the two-level-system ensemble and photon field as well as between ensemble components for moderate coupling is shown through numerical analysis. Given a fini"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3884","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:37:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ifEHhdUenxPpZZCXPekl76wvK9NZC0v91ogWkF7dQEFDn2TOi/vNt46QcCGR7SsbYSHgEc3OOKD5zQW9t/RCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:14:33.027578Z"},"content_sha256":"f8521d758591dccf578c6de4bd51d4d6368ed243c2550c0b263cc3ad9685e8a1","schema_version":"1.0","event_id":"sha256:f8521d758591dccf578c6de4bd51d4d6368ed243c2550c0b263cc3ad9685e8a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/54GSB2RPFEIAAYWNKRM7TEOADM/bundle.json","state_url":"https://pith.science/pith/54GSB2RPFEIAAYWNKRM7TEOADM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/54GSB2RPFEIAAYWNKRM7TEOADM/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":"2026-06-05T01:14:33Z","links":{"resolver":"https://pith.science/pith/54GSB2RPFEIAAYWNKRM7TEOADM","bundle":"https://pith.science/pith/54GSB2RPFEIAAYWNKRM7TEOADM/bundle.json","state":"https://pith.science/pith/54GSB2RPFEIAAYWNKRM7TEOADM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/54GSB2RPFEIAAYWNKRM7TEOADM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:54GSB2RPFEIAAYWNKRM7TEOADM","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":"6d793c8466791efc0ffbdfa8230a250e3d705705e16909753de20c27ee2567b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-05-21T04:49:09Z","title_canon_sha256":"abb47a7e95757ca269c80aa04df10b7157e2481804eacd7741333ee95eb6abf7"},"schema_version":"1.0","source":{"id":"1005.3884","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3884","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3884v2","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3884","created_at":"2026-05-18T04:37:33Z"},{"alias_kind":"pith_short_12","alias_value":"54GSB2RPFEIA","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"54GSB2RPFEIAAYWN","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"54GSB2RP","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:f8521d758591dccf578c6de4bd51d4d6368ed243c2550c0b263cc3ad9685e8a1","target":"graph","created_at":"2026-05-18T04:37:33Z","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":"We study the quantum phase transition of a N two-level atomic ensemble interacting with an optical degenerate parametric process, which can be described by the finite size Dicke Hamiltonian plus counter-rotating and quadratic field terms. Analytical closed forms of the critical coupling value and their corresponding separable ground states are derived in the weak and strong coupling regimes. The existence of bipartite entanglement between the two-level-system ensemble and photon field as well as between ensemble components for moderate coupling is shown through numerical analysis. Given a fini","authors_text":"B. M. Rodr\\'iguez-Lara, Ray-Kuang Lee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-05-21T04:49:09Z","title":"Quantum phase transition of nonlinear light in the finite size Dicke Hamiltonian"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3884","kind":"arxiv","version":2},"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":"sha256:2e1ce13e679b31c5a8a1faa6df8324ae5dc2f2bbf5fb1ba3a37bd626f0e11cbe","target":"record","created_at":"2026-05-18T04:37:33Z","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":"6d793c8466791efc0ffbdfa8230a250e3d705705e16909753de20c27ee2567b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-05-21T04:49:09Z","title_canon_sha256":"abb47a7e95757ca269c80aa04df10b7157e2481804eacd7741333ee95eb6abf7"},"schema_version":"1.0","source":{"id":"1005.3884","kind":"arxiv","version":2}},"canonical_sha256":"ef0d20ea2f29100062cd5459f991c01b3157f848553df9801f59db59de2492b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef0d20ea2f29100062cd5459f991c01b3157f848553df9801f59db59de2492b8","first_computed_at":"2026-05-18T04:37:33.082164Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:37:33.082164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8rWIr6yrPCWXcdJqhVDtCwYdKPdQeZ3CrDf4etHrSoaeN3nttv/teeb9/3XFRDhWd6HqYNuHS4gpEnJ1vp2IAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:37:33.082863Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.3884","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e1ce13e679b31c5a8a1faa6df8324ae5dc2f2bbf5fb1ba3a37bd626f0e11cbe","sha256:f8521d758591dccf578c6de4bd51d4d6368ed243c2550c0b263cc3ad9685e8a1"],"state_sha256":"88f79e218309c4d3eb1b153293c474cc2e1957ac4a469fab6475065a473076e0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pZiLdVpU7TQXaD1wVGE54Kt2aJdC5eN5JuIlxF8d8jsipozS0pyH/QtsWS84XKzqfMgmLIpU1+xwlvSg9POaBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:14:33.030994Z","bundle_sha256":"a98fb95ec131c9a1a575dac1be35c98870f1e0b63c1f08c46a7a66e6195b5ecf"}}