{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:Z5IS2TMOU266XQMSGBGWZGIBPU","short_pith_number":"pith:Z5IS2TMO","schema_version":"1.0","canonical_sha256":"cf512d4d8ea6bdebc192304d6c99017d2d1e8d39a8b6eb37f169def2b58cff50","source":{"kind":"arxiv","id":"2504.04205","version":1},"attestation_state":"computed","paper":{"title":"Bacterial Glass Transition","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["q-bio.QM"],"primary_cat":"cond-mat.soft","authors_text":"Ludovic Berthier, Martin Maliet, Maxime Deforet, Nicolas Fix-Boulier","submitted_at":"2025-04-05T15:21:25Z","abstract_excerpt":"Bacterial assemblies exhibit rich collective behaviors that control their biological functions, making them a relevant object of study from an active matter physics perspective. Dense bacterial suspensions self-organize into distinct physical phases with intriguing dynamical properties. Here, we study dense two-dimensional films of swimming bacteria using advanced imaging techniques and machine learning. By varying density, we uncover a bacterial glass transition, a direct active matter analogue of equilibrium glass transitions in colloidal and molecular fluids. The transition is marked by a d"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2504.04205","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-04-05T15:21:25Z","cross_cats_sorted":["q-bio.QM"],"title_canon_sha256":"c52adc4b8320bec6056642ed1bf5678ee596b9cef7f21cdb9dce4d2e0313e676","abstract_canon_sha256":"aaf245a2cd3e1bd90557d07fd907257c3d19cc21a77090e0a56ef2ba170b5c3d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:44:55.700010Z","signature_b64":"ZuqXIolfmZ9H9soJbP0yI8PTPBqPMEBeCYL2CI7inP6n83AVCyJ9Btcg2uedSnvV78THxjtn2BejvOlloH8jBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf512d4d8ea6bdebc192304d6c99017d2d1e8d39a8b6eb37f169def2b58cff50","last_reissued_at":"2026-07-05T10:44:55.699530Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:44:55.699530Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bacterial Glass Transition","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["q-bio.QM"],"primary_cat":"cond-mat.soft","authors_text":"Ludovic Berthier, Martin Maliet, Maxime Deforet, Nicolas Fix-Boulier","submitted_at":"2025-04-05T15:21:25Z","abstract_excerpt":"Bacterial assemblies exhibit rich collective behaviors that control their biological functions, making them a relevant object of study from an active matter physics perspective. Dense bacterial suspensions self-organize into distinct physical phases with intriguing dynamical properties. Here, we study dense two-dimensional films of swimming bacteria using advanced imaging techniques and machine learning. By varying density, we uncover a bacterial glass transition, a direct active matter analogue of equilibrium glass transitions in colloidal and molecular fluids. The transition is marked by a d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.04205","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.04205/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2504.04205","created_at":"2026-07-05T10:44:55.699586+00:00"},{"alias_kind":"arxiv_version","alias_value":"2504.04205v1","created_at":"2026-07-05T10:44:55.699586+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.04205","created_at":"2026-07-05T10:44:55.699586+00:00"},{"alias_kind":"pith_short_12","alias_value":"Z5IS2TMOU266","created_at":"2026-07-05T10:44:55.699586+00:00"},{"alias_kind":"pith_short_16","alias_value":"Z5IS2TMOU266XQMS","created_at":"2026-07-05T10:44:55.699586+00:00"},{"alias_kind":"pith_short_8","alias_value":"Z5IS2TMO","created_at":"2026-07-05T10:44:55.699586+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.13575","citing_title":"Various phases of active matter emerging from bacteria and their implications","ref_index":35,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU","json":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU.json","graph_json":"https://pith.science/api/pith-number/Z5IS2TMOU266XQMSGBGWZGIBPU/graph.json","events_json":"https://pith.science/api/pith-number/Z5IS2TMOU266XQMSGBGWZGIBPU/events.json","paper":"https://pith.science/paper/Z5IS2TMO"},"agent_actions":{"view_html":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU","download_json":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU.json","view_paper":"https://pith.science/paper/Z5IS2TMO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2504.04205&json=true","fetch_graph":"https://pith.science/api/pith-number/Z5IS2TMOU266XQMSGBGWZGIBPU/graph.json","fetch_events":"https://pith.science/api/pith-number/Z5IS2TMOU266XQMSGBGWZGIBPU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU/action/storage_attestation","attest_author":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU/action/author_attestation","sign_citation":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU/action/citation_signature","submit_replication":"https://pith.science/pith/Z5IS2TMOU266XQMSGBGWZGIBPU/action/replication_record"}},"created_at":"2026-07-05T10:44:55.699586+00:00","updated_at":"2026-07-05T10:44:55.699586+00:00"}