{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BULPQ7NGLUPF3ICX5KMUYJXCVU","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":"de436c7b6758d627ec984efa0601ccabcc32678697267af6a62e75cd4a364bff","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-10-27T17:14:29Z","title_canon_sha256":"a1ff254d50aa8f249a8239d6953d002352c531fa4ddc2d15a365e876f1b5eb82"},"schema_version":"1.0","source":{"id":"1510.07993","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07993","created_at":"2026-05-18T01:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07993v2","created_at":"2026-05-18T01:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07993","created_at":"2026-05-18T01:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"BULPQ7NGLUPF","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BULPQ7NGLUPF3ICX","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BULPQ7NG","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:9c004e1650c9d74f6042674c5f089073f255104e8d36614353ef04318dccb1d0","target":"graph","created_at":"2026-05-18T01:11:46Z","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 analyze resonant light scattering by an atomic cloud in a regime where near-field interactions between scatterers cannot be neglected. We first use a microscopic approach and calculate numerically the eigenmodes of the cloud for many different realizations. It is found that there always exists a small number of polaritonic modes that are spatially coherent and superradiant. We show that scattering is always dominated by these modes. We then use a macroscopic approach by introducing an effective permittivity so that the atomic cloud is equivalent to a dielectric particle. We show that there ","authors_text":"Antoine Browaeys, Christophe Sauvan, Jean-Jacques Greffet, Jean-Paul Hugonin, Nick Schilder, Stephan Jennewein, Yvan Sortais","cross_cats":["cond-mat.mes-hall","cond-mat.quant-gas","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-10-27T17:14:29Z","title":"Polaritonic modes in a dense cloud of atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07993","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:fc8256795dca5e010493fb1518567b9601bbdec8c10942a425b32c99de2b829f","target":"record","created_at":"2026-05-18T01:11:46Z","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":"de436c7b6758d627ec984efa0601ccabcc32678697267af6a62e75cd4a364bff","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-10-27T17:14:29Z","title_canon_sha256":"a1ff254d50aa8f249a8239d6953d002352c531fa4ddc2d15a365e876f1b5eb82"},"schema_version":"1.0","source":{"id":"1510.07993","kind":"arxiv","version":2}},"canonical_sha256":"0d16f87da65d1e5da057ea994c26e2ad17703888b714edeb3c46a00e4050ffa5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d16f87da65d1e5da057ea994c26e2ad17703888b714edeb3c46a00e4050ffa5","first_computed_at":"2026-05-18T01:11:46.586882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:46.586882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DgBUyJhh3FmDY6vN8SmitPaznqDiqrt8KPjR9zO9+MmnoAvinOnktjcbrF87UGE1nc6hZK4J+IForjLrRJfCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:46.587242Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07993","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc8256795dca5e010493fb1518567b9601bbdec8c10942a425b32c99de2b829f","sha256:9c004e1650c9d74f6042674c5f089073f255104e8d36614353ef04318dccb1d0"],"state_sha256":"97289549f0f12e6d1ee11b490eb3971a1bab5138db867ef5d689d7e35a5f8f3d"}