{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:FHNTOJD6F5ZPLOLPPD2MVOWWO6","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":"1cf64a25cd19c0cf768c8aa067822ba55ae7f6d56cffe0299da6f9d49f30f3d1","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2010-04-17T12:17:08Z","title_canon_sha256":"1debde88e6909aa84c2ad6ae602a5ed6961a72740dc7726fab7ead83c568379e"},"schema_version":"1.0","source":{"id":"1004.2956","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.2956","created_at":"2026-07-04T17:31:49Z"},{"alias_kind":"arxiv_version","alias_value":"1004.2956v1","created_at":"2026-07-04T17:31:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.2956","created_at":"2026-07-04T17:31:49Z"},{"alias_kind":"pith_short_12","alias_value":"FHNTOJD6F5ZP","created_at":"2026-07-04T17:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"FHNTOJD6F5ZPLOLP","created_at":"2026-07-04T17:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"FHNTOJD6","created_at":"2026-07-04T17:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:7b5e4a812666586f2a22e2673c2d145f94e34fb4b1c44c2d8a1c47a191f7e04d","target":"graph","created_at":"2026-07-04T17:31:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1004.2956/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bose-Einstein condensation, the macroscopic accumulation of bosonic particles in the energetic ground state below a critical temperature, has been demonstrated in several physical systems. The perhaps best known example of a bosonic gas, blackbody radiation, however exhibits no Bose-Einstein condensation at low temperatures. Instead of collectively occupying the lowest energy mode, the photons disappear in the cavity walls when the temperature is lowered - corresponding to a vanishing chemical potential. Here we report on evidence for a thermalised two-dimensional photon gas with freely adjust","authors_text":"Frank Vewinger, Jan Klaers, Martin Weitz","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2010-04-17T12:17:08Z","title":"Thermalisation of a two-dimensional photonic gas in a 'white-wall' photon box"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2956","kind":"arxiv","version":1},"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:eecee7e8361542b61d35d2e827fa55c642b7cb733309a70e03a6e0031ec66fb9","target":"record","created_at":"2026-07-04T17:31:49Z","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":"1cf64a25cd19c0cf768c8aa067822ba55ae7f6d56cffe0299da6f9d49f30f3d1","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2010-04-17T12:17:08Z","title_canon_sha256":"1debde88e6909aa84c2ad6ae602a5ed6961a72740dc7726fab7ead83c568379e"},"schema_version":"1.0","source":{"id":"1004.2956","kind":"arxiv","version":1}},"canonical_sha256":"29db37247e2f72f5b96f78f4cabad677a5a5284fad776fa8178ee5d0551571a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29db37247e2f72f5b96f78f4cabad677a5a5284fad776fa8178ee5d0551571a1","first_computed_at":"2026-07-04T17:31:49.668971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:31:49.668971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A4ba2d5uIhGx1LZg+RsJN2mRUX1V0CkcMsQgntCIM60ACJAmMW+NMI4FBcaqbS4xjhLhFm7vAy/StgjPWWqmCg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:31:49.669394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.2956","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eecee7e8361542b61d35d2e827fa55c642b7cb733309a70e03a6e0031ec66fb9","sha256:7b5e4a812666586f2a22e2673c2d145f94e34fb4b1c44c2d8a1c47a191f7e04d"],"state_sha256":"b4831efcceaff0d64a4291b79583ce9d6e5945eb3d03480838b9c654fe00f3bb"}