{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:H7OF2IQZ6CHATUPTKC76HQHJJQ","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":"a51ec0b8451105d99700509b6bd18a55ab3ec8869f85bd360b19f1fdf7710824","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-01-04T01:55:51Z","title_canon_sha256":"41af747127e7e5ec333e95289254de8015ad1028f5dea99d8406a1e0d1d1b655"},"schema_version":"1.0","source":{"id":"1701.00883","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00883","created_at":"2026-05-18T00:49:31Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00883v2","created_at":"2026-05-18T00:49:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00883","created_at":"2026-05-18T00:49:31Z"},{"alias_kind":"pith_short_12","alias_value":"H7OF2IQZ6CHA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"H7OF2IQZ6CHATUPT","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"H7OF2IQZ","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:2f1d99c2c7b8c2e41ae27f9a19d2bb253b32db5f1abada91f578a082ce903e7a","target":"graph","created_at":"2026-05-18T00:49:31Z","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 define a kind of heat engine via three-dimensional charged BTZ black holes. This case is quite subtle and needs to be more careful. The heat flow along the isochores does not equal to zero since the specific heat $C_V\\neq0$ and this point completely differs from the cases discussed before whose isochores and adiabats are identical. So one cannot simply apply the paradigm in the former literatures. However, if one introduces a new thermodynamic parameter associated with the renormalization length scale, the above problem can be solved. We obtain the analytical efficiency expression of the th","authors_text":"Feng Liang, Gu-Qiang Li, Jie-Xiong Mo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-01-04T01:55:51Z","title":"Heat engine in the three-dimensional spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00883","kind":"arxiv","version":2},"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:dae3504883697432ec246cf5bb7a904273bc0be3505663e201df236c8e18c4f8","target":"record","created_at":"2026-05-18T00:49:31Z","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":"a51ec0b8451105d99700509b6bd18a55ab3ec8869f85bd360b19f1fdf7710824","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-01-04T01:55:51Z","title_canon_sha256":"41af747127e7e5ec333e95289254de8015ad1028f5dea99d8406a1e0d1d1b655"},"schema_version":"1.0","source":{"id":"1701.00883","kind":"arxiv","version":2}},"canonical_sha256":"3fdc5d2219f08e09d1f350bfe3c0e94c030785b1eb25a045c1b98e23c256c6b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fdc5d2219f08e09d1f350bfe3c0e94c030785b1eb25a045c1b98e23c256c6b1","first_computed_at":"2026-05-18T00:49:31.553141Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:31.553141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p8gidwrqWJLmwZVAibvaZrZLZnLmdmCSaxHd+dM3Aa8eOCsNBY4AmSKY+cWxBxH5z2EzQvlgAv7B/I4tZvyxBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:31.553849Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.00883","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dae3504883697432ec246cf5bb7a904273bc0be3505663e201df236c8e18c4f8","sha256:2f1d99c2c7b8c2e41ae27f9a19d2bb253b32db5f1abada91f578a082ce903e7a"],"state_sha256":"2e7828044218047ac0a65c57a9c40b833cf6a708d0e1b0a32a7006bf6f3982f1"}