{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:S4DGG6UJVYWQTC45NLJEAK3CSK","short_pith_number":"pith:S4DGG6UJ","canonical_record":{"source":{"id":"1609.09817","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-30T17:10:06Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"293dd131c36fdf3210d2d32b805218f5c3eabcc422e09aea1fe8f763e4953cbb","abstract_canon_sha256":"fc2924d1515c1bd599e4300f4e0b9182f626be9f4c01c07a68da8c6ce631f205"},"schema_version":"1.0"},"canonical_sha256":"9706637a89ae2d098b9d6ad2402b62928b5f370b7cf709d552566d4ed6bbbc7d","source":{"kind":"arxiv","id":"1609.09817","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.09817","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1609.09817v2","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.09817","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"S4DGG6UJVYWQ","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"S4DGG6UJVYWQTC45","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"S4DGG6UJ","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:S4DGG6UJVYWQTC45NLJEAK3CSK","target":"record","payload":{"canonical_record":{"source":{"id":"1609.09817","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-30T17:10:06Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"293dd131c36fdf3210d2d32b805218f5c3eabcc422e09aea1fe8f763e4953cbb","abstract_canon_sha256":"fc2924d1515c1bd599e4300f4e0b9182f626be9f4c01c07a68da8c6ce631f205"},"schema_version":"1.0"},"canonical_sha256":"9706637a89ae2d098b9d6ad2402b62928b5f370b7cf709d552566d4ed6bbbc7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:12.341962Z","signature_b64":"qN9L5KjyWNwL8mappJ+XAIstkpHWc/m98mpAX7pjrx8jIpymPQnaPDetwylyEtoU+ItoPMmxLHV5j9NdoUI/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9706637a89ae2d098b9d6ad2402b62928b5f370b7cf709d552566d4ed6bbbc7d","last_reissued_at":"2026-05-18T00:50:12.341576Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:12.341576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.09817","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":"2026-05-18T00:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E2KI6HorrmIct0gSAxJA+ibTpVQp/nvIUMXEI8hWWG3cQvTFMYwuYY2xocGXXkeIHil8QYXp6pKyfl9A6E0aDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:53:41.983898Z"},"content_sha256":"9992b3b47abb65e81fcde79341485e51a340071483d25e1ed7d6ecee5220048c","schema_version":"1.0","event_id":"sha256:9992b3b47abb65e81fcde79341485e51a340071483d25e1ed7d6ecee5220048c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:S4DGG6UJVYWQTC45NLJEAK3CSK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Repulsive Fermi polarons in a resonant mixture of ultracold ${}^6$Li atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"A. Amico, A. Burchianti, A. Recati, C. Fort, F. Scazza, G. Roati, G. Valtolina, M. Inguscio, M. Zaccanti, P. Massignan","submitted_at":"2016-09-30T17:10:06Z","abstract_excerpt":"We employ radio-frequency spectroscopy to investigate a polarized spin-mixture of ultracold ${}^6$Li atoms close to a broad Feshbach scattering resonance. Focusing on the regime of strong repulsive interactions, we observe well-defined coherent quasiparticles even for unitarity-limited interactions. We characterize the many-body system by extracting the key properties of repulsive Fermi polarons: the energy $E_+$, the effective mass $m^*$, the residue $Z$ and the decay rate $\\Gamma$. Above a critical interaction, $E_+$ is found to exceed the Fermi energy of the bath while $m^*$ diverges and ev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.09817","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":"2026-05-18T00:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2bJz6oSjeXQXyG8CcQv+i4VOk3u0MBieSvFThGk14rIKkwYAPhTczMVM+ploN10AIrMoeum9rvauD2lLtobWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:53:41.984252Z"},"content_sha256":"928b0c68c0f89653a8b99beb38850494e44735e466c7013a2a3356eecd525d30","schema_version":"1.0","event_id":"sha256:928b0c68c0f89653a8b99beb38850494e44735e466c7013a2a3356eecd525d30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/bundle.json","state_url":"https://pith.science/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/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":"2026-05-28T12:53:41Z","links":{"resolver":"https://pith.science/pith/S4DGG6UJVYWQTC45NLJEAK3CSK","bundle":"https://pith.science/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/bundle.json","state":"https://pith.science/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4DGG6UJVYWQTC45NLJEAK3CSK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:S4DGG6UJVYWQTC45NLJEAK3CSK","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":"fc2924d1515c1bd599e4300f4e0b9182f626be9f4c01c07a68da8c6ce631f205","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-30T17:10:06Z","title_canon_sha256":"293dd131c36fdf3210d2d32b805218f5c3eabcc422e09aea1fe8f763e4953cbb"},"schema_version":"1.0","source":{"id":"1609.09817","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.09817","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1609.09817v2","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.09817","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"S4DGG6UJVYWQ","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"S4DGG6UJVYWQTC45","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"S4DGG6UJ","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:928b0c68c0f89653a8b99beb38850494e44735e466c7013a2a3356eecd525d30","target":"graph","created_at":"2026-05-18T00:50:12Z","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 employ radio-frequency spectroscopy to investigate a polarized spin-mixture of ultracold ${}^6$Li atoms close to a broad Feshbach scattering resonance. Focusing on the regime of strong repulsive interactions, we observe well-defined coherent quasiparticles even for unitarity-limited interactions. We characterize the many-body system by extracting the key properties of repulsive Fermi polarons: the energy $E_+$, the effective mass $m^*$, the residue $Z$ and the decay rate $\\Gamma$. Above a critical interaction, $E_+$ is found to exceed the Fermi energy of the bath while $m^*$ diverges and ev","authors_text":"A. Amico, A. Burchianti, A. Recati, C. Fort, F. Scazza, G. Roati, G. Valtolina, M. Inguscio, M. Zaccanti, P. Massignan","cross_cats":["physics.atom-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-30T17:10:06Z","title":"Repulsive Fermi polarons in a resonant mixture of ultracold ${}^6$Li atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.09817","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":"sha256:9992b3b47abb65e81fcde79341485e51a340071483d25e1ed7d6ecee5220048c","target":"record","created_at":"2026-05-18T00:50:12Z","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":"fc2924d1515c1bd599e4300f4e0b9182f626be9f4c01c07a68da8c6ce631f205","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-30T17:10:06Z","title_canon_sha256":"293dd131c36fdf3210d2d32b805218f5c3eabcc422e09aea1fe8f763e4953cbb"},"schema_version":"1.0","source":{"id":"1609.09817","kind":"arxiv","version":2}},"canonical_sha256":"9706637a89ae2d098b9d6ad2402b62928b5f370b7cf709d552566d4ed6bbbc7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9706637a89ae2d098b9d6ad2402b62928b5f370b7cf709d552566d4ed6bbbc7d","first_computed_at":"2026-05-18T00:50:12.341576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:12.341576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qN9L5KjyWNwL8mappJ+XAIstkpHWc/m98mpAX7pjrx8jIpymPQnaPDetwylyEtoU+ItoPMmxLHV5j9NdoUI/CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:12.341962Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.09817","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9992b3b47abb65e81fcde79341485e51a340071483d25e1ed7d6ecee5220048c","sha256:928b0c68c0f89653a8b99beb38850494e44735e466c7013a2a3356eecd525d30"],"state_sha256":"1e69f0d48d326c6b093293bc619c94eff4dd52967f1b456dcab54e3e4c1a4be5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wDODOmPtz6N2mp4BJThF8FmD9AyCXGOIsgXxhzjGI9yPp4EiOZbrpk4sgAu/oKeeh5NyomiFDbG1At0d+ntXCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:53:41.986264Z","bundle_sha256":"1b1b8b2eec2987266053a9362118f7f6bb78e576f84aa66e6c0f1a9920267cba"}}