{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:N4J7BF57AHTDBF53AVXIXH34RW","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":"2f3b66e5439969d469d4dfc17b69bde4118f16d1e51fede0819896f1922c2ecb","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2006-01-10T12:43:30Z","title_canon_sha256":"d39b37e1d46f1e815459de6368321ca28073bc3c31aaf0f2a0ec35580cc91135"},"schema_version":"1.0","source":{"id":"cond-mat/0601196","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0601196","created_at":"2026-05-18T01:08:56Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0601196v1","created_at":"2026-05-18T01:08:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0601196","created_at":"2026-05-18T01:08:56Z"},{"alias_kind":"pith_short_12","alias_value":"N4J7BF57AHTD","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"N4J7BF57AHTDBF53","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"N4J7BF57","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:e85675a308341ded3a03077f03bd0ad0f906bffd96212afdb4e2ccb05222f14f","target":"graph","created_at":"2026-05-18T01:08:56Z","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 investigate the critical speeding up of heat equilibration by the piston effect (PE) in a nearly supercritical van der Waals (vdW) fluid confined in a homogeneous porous medium. We perform an asymptotic analysis of the averaged linearized mass, momentum and energy equations to describe the response of the medium to a boundary heat flux. While nearing the critical point (CP), we find two universal crossovers depending on porosity, intrinsic permeability and viscosity. Closer to the CP than the first crossover, a pressure gradient appears in the bulk due to viscous effects, the PE characteris","authors_text":"Bernard Zappoli (PMMH), Didier Lasseux (TEFE), Jalil Ouazzani (ICMCB), Rapha\\\"el Cherrier (TEFE), Yves Garrabos (ICMCB)","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2006-01-10T12:43:30Z","title":"Critical slowing down and fading away of the piston effect in porous media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0601196","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":"sha256:717b92cf6d6157de8948951cce86449e8d678a88b23d5c0d841eaaf246bca51c","target":"record","created_at":"2026-05-18T01:08:56Z","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":"2f3b66e5439969d469d4dfc17b69bde4118f16d1e51fede0819896f1922c2ecb","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2006-01-10T12:43:30Z","title_canon_sha256":"d39b37e1d46f1e815459de6368321ca28073bc3c31aaf0f2a0ec35580cc91135"},"schema_version":"1.0","source":{"id":"cond-mat/0601196","kind":"arxiv","version":1}},"canonical_sha256":"6f13f097bf01e63097bb056e8b9f7c8da8593a9eef035ea5a7575dff909ccf85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f13f097bf01e63097bb056e8b9f7c8da8593a9eef035ea5a7575dff909ccf85","first_computed_at":"2026-05-18T01:08:56.388494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:56.388494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X8EmF3YRbEg3H51cjuH8PDhc0qoNvuYNtprmmjn03/ZlJRqTuY4d7W7akSr4gyR77s+diSLy4Y/FQnZLN01PBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:56.388982Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0601196","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:717b92cf6d6157de8948951cce86449e8d678a88b23d5c0d841eaaf246bca51c","sha256:e85675a308341ded3a03077f03bd0ad0f906bffd96212afdb4e2ccb05222f14f"],"state_sha256":"fa203a3cef6f2eaa2315baa3222a34501518aaa82c3ca41ab367d3f1b657add7"}