{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:55IUSD4TE3I52UHA7UDKSZ7EMM","short_pith_number":"pith:55IUSD4T","canonical_record":{"source":{"id":"1412.6685","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-12-20T19:41:03Z","cross_cats_sorted":[],"title_canon_sha256":"257246f219dc83fa2e92fe32be43e8d40e945d64ea4d1607e77ef7cab70bf533","abstract_canon_sha256":"72e0721ad5dd9a2d48032c7765f47bba23bd29aaddb5b8c8c28ed4a0ad33eaab"},"schema_version":"1.0"},"canonical_sha256":"ef51490f9326d1dd50e0fd06a967e46329d61308f81f685a73737a6dc3464b55","source":{"kind":"arxiv","id":"1412.6685","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.6685","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"arxiv_version","alias_value":"1412.6685v2","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.6685","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"pith_short_12","alias_value":"55IUSD4TE3I5","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"55IUSD4TE3I52UHA","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"55IUSD4T","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:55IUSD4TE3I52UHA7UDKSZ7EMM","target":"record","payload":{"canonical_record":{"source":{"id":"1412.6685","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-12-20T19:41:03Z","cross_cats_sorted":[],"title_canon_sha256":"257246f219dc83fa2e92fe32be43e8d40e945d64ea4d1607e77ef7cab70bf533","abstract_canon_sha256":"72e0721ad5dd9a2d48032c7765f47bba23bd29aaddb5b8c8c28ed4a0ad33eaab"},"schema_version":"1.0"},"canonical_sha256":"ef51490f9326d1dd50e0fd06a967e46329d61308f81f685a73737a6dc3464b55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:58.941056Z","signature_b64":"I/GLZaCcHgBzcC6BDFOBU42EvjLtgsvya/RBK32YlqOJwm4eHfuN9SJTMdhz13K2rIWYPFQwBJUiWRJvWdJvDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef51490f9326d1dd50e0fd06a967e46329d61308f81f685a73737a6dc3464b55","last_reissued_at":"2026-05-18T02:20:58.940372Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:58.940372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.6685","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":"2026-05-18T02:20:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ql6UhkT+DKMPwqlnkePOUH4d9Hy4QtSgpjoImj4IHDk8zuykgdPOSp0yO27CHS5q1mb/QFeC3V5gEf1b4haRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T22:46:51.461995Z"},"content_sha256":"c5b7ec0bfe6a0e19df9eace1c0517dba9a1ceb1bf88997f5b68b1e2c85810a09","schema_version":"1.0","event_id":"sha256:c5b7ec0bfe6a0e19df9eace1c0517dba9a1ceb1bf88997f5b68b1e2c85810a09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:55IUSD4TE3I52UHA7UDKSZ7EMM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin-Imbalanced Quasi-Two-Dimensional Fermi Gases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"C.-Y. Cheng, I. Arakelyan, J. E. Thomas, W. Ong","submitted_at":"2014-12-20T19:41:03Z","abstract_excerpt":"We measure the density profiles for a Fermi gas of $^6$Li containing $N_1$ spin-up atoms and $N_2$ spin-down atoms, confined in a quasi-two-dimensional geometry. The spatial profiles are measured as a function of spin-imbalance $N_2/N_1$ and interaction strength, which is controlled by means of a collisional (Feshbach) resonance. The measured cloud radii and central densities are in disagreement with mean-field Bardeen-Cooper-Schrieffer theory for a true two-dimensional system. We find that the data for normal-fluid mixtures are reasonably well fit by a simple two-dimensional polaron model of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.6685","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":"2026-05-18T02:20:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9cKzDd3ymLl5npafG360QlASUGqgHVgBLuPcJzNqiMEtCGjUpVuzhHgNc9vmyvBK9yB+XH+qPGYPyOb9bM9UCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T22:46:51.462342Z"},"content_sha256":"a09e6e287014e7a0cbcfdebb0f4d710ec1695a365987744de9e2d4d8e5a3a12b","schema_version":"1.0","event_id":"sha256:a09e6e287014e7a0cbcfdebb0f4d710ec1695a365987744de9e2d4d8e5a3a12b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/bundle.json","state_url":"https://pith.science/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/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":"2026-06-29T22:46:51Z","links":{"resolver":"https://pith.science/pith/55IUSD4TE3I52UHA7UDKSZ7EMM","bundle":"https://pith.science/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/bundle.json","state":"https://pith.science/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55IUSD4TE3I52UHA7UDKSZ7EMM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:55IUSD4TE3I52UHA7UDKSZ7EMM","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":"72e0721ad5dd9a2d48032c7765f47bba23bd29aaddb5b8c8c28ed4a0ad33eaab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-12-20T19:41:03Z","title_canon_sha256":"257246f219dc83fa2e92fe32be43e8d40e945d64ea4d1607e77ef7cab70bf533"},"schema_version":"1.0","source":{"id":"1412.6685","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.6685","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"arxiv_version","alias_value":"1412.6685v2","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.6685","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"pith_short_12","alias_value":"55IUSD4TE3I5","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"55IUSD4TE3I52UHA","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"55IUSD4T","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:a09e6e287014e7a0cbcfdebb0f4d710ec1695a365987744de9e2d4d8e5a3a12b","target":"graph","created_at":"2026-05-18T02:20:58Z","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 measure the density profiles for a Fermi gas of $^6$Li containing $N_1$ spin-up atoms and $N_2$ spin-down atoms, confined in a quasi-two-dimensional geometry. The spatial profiles are measured as a function of spin-imbalance $N_2/N_1$ and interaction strength, which is controlled by means of a collisional (Feshbach) resonance. The measured cloud radii and central densities are in disagreement with mean-field Bardeen-Cooper-Schrieffer theory for a true two-dimensional system. We find that the data for normal-fluid mixtures are reasonably well fit by a simple two-dimensional polaron model of ","authors_text":"C.-Y. Cheng, I. Arakelyan, J. E. Thomas, W. Ong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-12-20T19:41:03Z","title":"Spin-Imbalanced Quasi-Two-Dimensional Fermi Gases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.6685","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:c5b7ec0bfe6a0e19df9eace1c0517dba9a1ceb1bf88997f5b68b1e2c85810a09","target":"record","created_at":"2026-05-18T02:20:58Z","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":"72e0721ad5dd9a2d48032c7765f47bba23bd29aaddb5b8c8c28ed4a0ad33eaab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-12-20T19:41:03Z","title_canon_sha256":"257246f219dc83fa2e92fe32be43e8d40e945d64ea4d1607e77ef7cab70bf533"},"schema_version":"1.0","source":{"id":"1412.6685","kind":"arxiv","version":2}},"canonical_sha256":"ef51490f9326d1dd50e0fd06a967e46329d61308f81f685a73737a6dc3464b55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef51490f9326d1dd50e0fd06a967e46329d61308f81f685a73737a6dc3464b55","first_computed_at":"2026-05-18T02:20:58.940372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:20:58.940372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I/GLZaCcHgBzcC6BDFOBU42EvjLtgsvya/RBK32YlqOJwm4eHfuN9SJTMdhz13K2rIWYPFQwBJUiWRJvWdJvDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:20:58.941056Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.6685","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5b7ec0bfe6a0e19df9eace1c0517dba9a1ceb1bf88997f5b68b1e2c85810a09","sha256:a09e6e287014e7a0cbcfdebb0f4d710ec1695a365987744de9e2d4d8e5a3a12b"],"state_sha256":"5c7f09b930c57c2ce64dbb614ae63c106bfd34a9313ddf64494166089dd941f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tFgVwYSBFNVjjURVbfE+TOvUTuU/bTnH2E6VJe8vIYJz5ts+aWnMaA0KoPsHhzrsb78BVGXa09T/yblUPPSJAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T22:46:51.464168Z","bundle_sha256":"9343e43e6bd4663af2ee2b3ea4ac7e234fa7c443b7977a3d4e57178f35eff9cf"}}