{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:664HG7K2VL27Y2QQNH5M55NUT2","short_pith_number":"pith:664HG7K2","canonical_record":{"source":{"id":"2204.09492","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2022-04-20T14:38:58Z","cross_cats_sorted":[],"title_canon_sha256":"41e76c799d274bc19c76fc66149370ffb872fcd7d44a272ac641758e88f56f4f","abstract_canon_sha256":"1d9477c8e8d561dc3984469af5662996a741d8e74deeeff418966352e211dd4a"},"schema_version":"1.0"},"canonical_sha256":"f7b8737d5aaaf5fc6a1069facef5b49e85461002b54db868d7230978c672ac49","source":{"kind":"arxiv","id":"2204.09492","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.09492","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"arxiv_version","alias_value":"2204.09492v1","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.09492","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_12","alias_value":"664HG7K2VL27","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_16","alias_value":"664HG7K2VL27Y2QQ","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_8","alias_value":"664HG7K2","created_at":"2026-07-05T04:59:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:664HG7K2VL27Y2QQNH5M55NUT2","target":"record","payload":{"canonical_record":{"source":{"id":"2204.09492","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2022-04-20T14:38:58Z","cross_cats_sorted":[],"title_canon_sha256":"41e76c799d274bc19c76fc66149370ffb872fcd7d44a272ac641758e88f56f4f","abstract_canon_sha256":"1d9477c8e8d561dc3984469af5662996a741d8e74deeeff418966352e211dd4a"},"schema_version":"1.0"},"canonical_sha256":"f7b8737d5aaaf5fc6a1069facef5b49e85461002b54db868d7230978c672ac49","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:59:21.839339Z","signature_b64":"EOQxFmbCVwYVmCku+MXXOosgzDSQ+HWErlbHz3+30jGEsrr0lHx+Mj7hbzSg1lj+p9GYrqfb6EHutbWAtWDJAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7b8737d5aaaf5fc6a1069facef5b49e85461002b54db868d7230978c672ac49","last_reissued_at":"2026-07-05T04:59:21.838856Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:59:21.838856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.09492","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:59:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ezpe4Dqs4/Qwq0dYKVxJWtn2/oQz73Kt7S6uacqRgVYhLnbCQxFI/U5w//zvg6uCrjSCthAn0GQ9xGwGJsvRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T01:12:58.255765Z"},"content_sha256":"8ddf9906a436805c3eba3a5f177623639f42cf955d05b38e0ab3274e70dc3a9b","schema_version":"1.0","event_id":"sha256:8ddf9906a436805c3eba3a5f177623639f42cf955d05b38e0ab3274e70dc3a9b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:664HG7K2VL27Y2QQNH5M55NUT2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simple fluid with broken time reversal invariance","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"Annette Zippelius, Matthias Fuchs, Niklas Grimm","submitted_at":"2022-04-20T14:38:58Z","abstract_excerpt":"We characterize a system of hard spheres with a simple collision rule that breaks time reversal symmetry, but conserves energy. The collisions lead to an a-chiral, isotropic, and homogeneous stationary state, whose properties are determined in simulations and compared to an approximate theory originally developed for elastic hard spheres. In the nonequilibrium fluid state, velocities are correlated, a phenomenon known from other nonequilibrium stationary states. The correlations are long-ranged decaying like $1/r^d$ in $d$ dimensions. Such correlations are expected on general grounds far from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.09492","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/2204.09492/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:59:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y5bbNWTRpNdpA05Xq4FOT2jGm42i/huxsSNWSyrgnFx7i6QqdIypilfh3jVFfLEORNBgcrUkHn07oLmqm2SnCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T01:12:58.256407Z"},"content_sha256":"6d64dd3c5a66c497dc989ff0a0c9f1be69616aa5410bf150555adb995674143d","schema_version":"1.0","event_id":"sha256:6d64dd3c5a66c497dc989ff0a0c9f1be69616aa5410bf150555adb995674143d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/664HG7K2VL27Y2QQNH5M55NUT2/bundle.json","state_url":"https://pith.science/pith/664HG7K2VL27Y2QQNH5M55NUT2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/664HG7K2VL27Y2QQNH5M55NUT2/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-08T01:12:58Z","links":{"resolver":"https://pith.science/pith/664HG7K2VL27Y2QQNH5M55NUT2","bundle":"https://pith.science/pith/664HG7K2VL27Y2QQNH5M55NUT2/bundle.json","state":"https://pith.science/pith/664HG7K2VL27Y2QQNH5M55NUT2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/664HG7K2VL27Y2QQNH5M55NUT2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:664HG7K2VL27Y2QQNH5M55NUT2","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":"1d9477c8e8d561dc3984469af5662996a741d8e74deeeff418966352e211dd4a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2022-04-20T14:38:58Z","title_canon_sha256":"41e76c799d274bc19c76fc66149370ffb872fcd7d44a272ac641758e88f56f4f"},"schema_version":"1.0","source":{"id":"2204.09492","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.09492","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"arxiv_version","alias_value":"2204.09492v1","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.09492","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_12","alias_value":"664HG7K2VL27","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_16","alias_value":"664HG7K2VL27Y2QQ","created_at":"2026-07-05T04:59:21Z"},{"alias_kind":"pith_short_8","alias_value":"664HG7K2","created_at":"2026-07-05T04:59:21Z"}],"graph_snapshots":[{"event_id":"sha256:6d64dd3c5a66c497dc989ff0a0c9f1be69616aa5410bf150555adb995674143d","target":"graph","created_at":"2026-07-05T04:59:21Z","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/2204.09492/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We characterize a system of hard spheres with a simple collision rule that breaks time reversal symmetry, but conserves energy. The collisions lead to an a-chiral, isotropic, and homogeneous stationary state, whose properties are determined in simulations and compared to an approximate theory originally developed for elastic hard spheres. In the nonequilibrium fluid state, velocities are correlated, a phenomenon known from other nonequilibrium stationary states. The correlations are long-ranged decaying like $1/r^d$ in $d$ dimensions. Such correlations are expected on general grounds far from ","authors_text":"Annette Zippelius, Matthias Fuchs, Niklas Grimm","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2022-04-20T14:38:58Z","title":"Simple fluid with broken time reversal invariance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.09492","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":"sha256:8ddf9906a436805c3eba3a5f177623639f42cf955d05b38e0ab3274e70dc3a9b","target":"record","created_at":"2026-07-05T04:59:21Z","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":"1d9477c8e8d561dc3984469af5662996a741d8e74deeeff418966352e211dd4a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2022-04-20T14:38:58Z","title_canon_sha256":"41e76c799d274bc19c76fc66149370ffb872fcd7d44a272ac641758e88f56f4f"},"schema_version":"1.0","source":{"id":"2204.09492","kind":"arxiv","version":1}},"canonical_sha256":"f7b8737d5aaaf5fc6a1069facef5b49e85461002b54db868d7230978c672ac49","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7b8737d5aaaf5fc6a1069facef5b49e85461002b54db868d7230978c672ac49","first_computed_at":"2026-07-05T04:59:21.838856Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:59:21.838856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EOQxFmbCVwYVmCku+MXXOosgzDSQ+HWErlbHz3+30jGEsrr0lHx+Mj7hbzSg1lj+p9GYrqfb6EHutbWAtWDJAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:59:21.839339Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.09492","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ddf9906a436805c3eba3a5f177623639f42cf955d05b38e0ab3274e70dc3a9b","sha256:6d64dd3c5a66c497dc989ff0a0c9f1be69616aa5410bf150555adb995674143d"],"state_sha256":"cc44c2da34f0f4249091b782121dd64ce54332cef59cab32433da2635dd3b634"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t8WgZc63O7ytmUtWcy7CQoDGaxI3MmPRWXq5VMv8mJizCzc4BwJtY2CTjXXVkLDRVhJ54cXHEPN+kJofiDj+DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T01:12:58.260802Z","bundle_sha256":"1ef3f5497c788482d39c9d71f1d6fb8f33b1c9eb148edfadd8fb996cb930a0b5"}}