{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:35IYJK46HVNSJ7CK3FWTKVZFHD","short_pith_number":"pith:35IYJK46","schema_version":"1.0","canonical_sha256":"df5184ab9e3d5b24fc4ad96d35572538edb4efb565d55dc59ce9d83a41030071","source":{"kind":"arxiv","id":"2506.08236","version":2},"attestation_state":"computed","paper":{"title":"Delayed Arrow-of-Time Detection in Signed Laplacian Dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"Adam Brandenburger, Pierfrancesco La Mura","submitted_at":"2025-06-09T21:08:59Z","abstract_excerpt":"We study how rapidly the direction of time becomes operationally detectable from mesoscopic data when state-weights may be positive or negative. In contrast with classical Markov processes -- where forward evolution is instantly distinguishable from its reverse -- signed dynamics can render the arrow of time undetectable during an initial interval. Assume the generator of the signed dynamics is a symmetric signed Laplacian with a single linear invariant and a phase-space Second Law holds in the form of non-decreasing R\\'enyi-$2$ entropy. Drawing on recent results on eventual exponential positi"},"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":"2506.08236","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T21:08:59Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"91888592d68ae555283e7f490a4abffc604d3870f8f0c4135fa2186ac7007508","abstract_canon_sha256":"f3f289cd866191d0ca8449bb8e65c25f70805588bda7a403b421c2520836caab"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:21:48.841732Z","signature_b64":"GBNbj5XAJDg5yYOvrLhROD3WPglWtUNoSwBwimYkVNcANfeXCeLZ5/k48GdqNSg5p2J0XnOwYOQa6ES378pMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df5184ab9e3d5b24fc4ad96d35572538edb4efb565d55dc59ce9d83a41030071","last_reissued_at":"2026-07-05T11:21:48.841253Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:21:48.841253Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Delayed Arrow-of-Time Detection in Signed Laplacian Dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"Adam Brandenburger, Pierfrancesco La Mura","submitted_at":"2025-06-09T21:08:59Z","abstract_excerpt":"We study how rapidly the direction of time becomes operationally detectable from mesoscopic data when state-weights may be positive or negative. In contrast with classical Markov processes -- where forward evolution is instantly distinguishable from its reverse -- signed dynamics can render the arrow of time undetectable during an initial interval. Assume the generator of the signed dynamics is a symmetric signed Laplacian with a single linear invariant and a phase-space Second Law holds in the form of non-decreasing R\\'enyi-$2$ entropy. Drawing on recent results on eventual exponential positi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.08236","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2506.08236/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":"2506.08236","created_at":"2026-07-05T11:21:48.841311+00:00"},{"alias_kind":"arxiv_version","alias_value":"2506.08236v2","created_at":"2026-07-05T11:21:48.841311+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.08236","created_at":"2026-07-05T11:21:48.841311+00:00"},{"alias_kind":"pith_short_12","alias_value":"35IYJK46HVNS","created_at":"2026-07-05T11:21:48.841311+00:00"},{"alias_kind":"pith_short_16","alias_value":"35IYJK46HVNSJ7CK","created_at":"2026-07-05T11:21:48.841311+00:00"},{"alias_kind":"pith_short_8","alias_value":"35IYJK46","created_at":"2026-07-05T11:21:48.841311+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD","json":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD.json","graph_json":"https://pith.science/api/pith-number/35IYJK46HVNSJ7CK3FWTKVZFHD/graph.json","events_json":"https://pith.science/api/pith-number/35IYJK46HVNSJ7CK3FWTKVZFHD/events.json","paper":"https://pith.science/paper/35IYJK46"},"agent_actions":{"view_html":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD","download_json":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD.json","view_paper":"https://pith.science/paper/35IYJK46","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2506.08236&json=true","fetch_graph":"https://pith.science/api/pith-number/35IYJK46HVNSJ7CK3FWTKVZFHD/graph.json","fetch_events":"https://pith.science/api/pith-number/35IYJK46HVNSJ7CK3FWTKVZFHD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD/action/storage_attestation","attest_author":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD/action/author_attestation","sign_citation":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD/action/citation_signature","submit_replication":"https://pith.science/pith/35IYJK46HVNSJ7CK3FWTKVZFHD/action/replication_record"}},"created_at":"2026-07-05T11:21:48.841311+00:00","updated_at":"2026-07-05T11:21:48.841311+00:00"}