{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VPCOLCBJGJIDKXVS424JAEW45A","short_pith_number":"pith:VPCOLCBJ","canonical_record":{"source":{"id":"1803.02491","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-07T00:39:02Z","cross_cats_sorted":[],"title_canon_sha256":"9312973ba027084ce318cc1abcda19a2465975651987ff8f2ee9057e4a4143c6","abstract_canon_sha256":"0c5b8feef43873227c92775ece7c67e72025ffef9d63dc723cde676ebd4ab094"},"schema_version":"1.0"},"canonical_sha256":"abc4e588293250355eb2e6b89012dce82cafe58d2901182b93c25fd4eb9f7bdd","source":{"kind":"arxiv","id":"1803.02491","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02491","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02491v1","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02491","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"pith_short_12","alias_value":"VPCOLCBJGJID","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VPCOLCBJGJIDKXVS","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VPCOLCBJ","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VPCOLCBJGJIDKXVS424JAEW45A","target":"record","payload":{"canonical_record":{"source":{"id":"1803.02491","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-07T00:39:02Z","cross_cats_sorted":[],"title_canon_sha256":"9312973ba027084ce318cc1abcda19a2465975651987ff8f2ee9057e4a4143c6","abstract_canon_sha256":"0c5b8feef43873227c92775ece7c67e72025ffef9d63dc723cde676ebd4ab094"},"schema_version":"1.0"},"canonical_sha256":"abc4e588293250355eb2e6b89012dce82cafe58d2901182b93c25fd4eb9f7bdd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:49.617134Z","signature_b64":"0izpLyQfRRVNAZQ5UwhJ0dObyMxNviJmC/NSSr7xKldjKo9X6Br/O4NBKbuY0WPcz/5LtGGBKzvBkYWBwYTDBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abc4e588293250355eb2e6b89012dce82cafe58d2901182b93c25fd4eb9f7bdd","last_reissued_at":"2026-05-18T00:04:49.616457Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:49.616457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.02491","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":"2026-05-18T00:04:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oL45iWiGe66GcPk2K9QITkUdg6WyysY58z5H/FFaGGw98e5KGfpoDAkrS52CnL6oCEIj4Yj30MBLDoVzZHrGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:14:41.704679Z"},"content_sha256":"765ff18734b52884091d220e264bcbf2aa7d0c821ebc4a522885ebba68801308","schema_version":"1.0","event_id":"sha256:765ff18734b52884091d220e264bcbf2aa7d0c821ebc4a522885ebba68801308"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VPCOLCBJGJIDKXVS424JAEW45A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase transition and heat engine efficiency of phantom AdS black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Jie-Xiong Mo, Shan-quan Lan","submitted_at":"2018-03-07T00:39:02Z","abstract_excerpt":"Phase transition and heat engine efficiency of phantom AdS black holes are investigated with peculiar properties found. In the non-extended phase space, we probe the possibility of $T-S$ criticality in both the canonical ensemble and grand-canonical ensemble. It is shown that no $T-S$ criticality exists for the phantom AdS black hole in the canonical ensemble, which is different from the RN-AdS black hole. Contrary to the canonical ensemble, no critical point can be found for neither phantom AdS black holes nor RN-AdS black hole in the grand-canonical ensemble. Moreover, we study the specific "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02491","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":""},"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":"2026-05-18T00:04:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ApVmdJGhswezGUkcmobVKc1t+QaWnoNhV8ulnnSJ+9UmJAe2g7Ux1gVrbnBny2olKmTcSArGMZR6Vb6St5SJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:14:41.707006Z"},"content_sha256":"839a762e3227649d6d64e45213a48e8fba5ba87e3a54a0fd0489cc2ee0152fe1","schema_version":"1.0","event_id":"sha256:839a762e3227649d6d64e45213a48e8fba5ba87e3a54a0fd0489cc2ee0152fe1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VPCOLCBJGJIDKXVS424JAEW45A/bundle.json","state_url":"https://pith.science/pith/VPCOLCBJGJIDKXVS424JAEW45A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VPCOLCBJGJIDKXVS424JAEW45A/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":"2026-06-09T14:14:41Z","links":{"resolver":"https://pith.science/pith/VPCOLCBJGJIDKXVS424JAEW45A","bundle":"https://pith.science/pith/VPCOLCBJGJIDKXVS424JAEW45A/bundle.json","state":"https://pith.science/pith/VPCOLCBJGJIDKXVS424JAEW45A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VPCOLCBJGJIDKXVS424JAEW45A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VPCOLCBJGJIDKXVS424JAEW45A","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":"0c5b8feef43873227c92775ece7c67e72025ffef9d63dc723cde676ebd4ab094","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-07T00:39:02Z","title_canon_sha256":"9312973ba027084ce318cc1abcda19a2465975651987ff8f2ee9057e4a4143c6"},"schema_version":"1.0","source":{"id":"1803.02491","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02491","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02491v1","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02491","created_at":"2026-05-18T00:04:49Z"},{"alias_kind":"pith_short_12","alias_value":"VPCOLCBJGJID","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VPCOLCBJGJIDKXVS","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VPCOLCBJ","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:839a762e3227649d6d64e45213a48e8fba5ba87e3a54a0fd0489cc2ee0152fe1","target":"graph","created_at":"2026-05-18T00:04:49Z","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":"Phase transition and heat engine efficiency of phantom AdS black holes are investigated with peculiar properties found. In the non-extended phase space, we probe the possibility of $T-S$ criticality in both the canonical ensemble and grand-canonical ensemble. It is shown that no $T-S$ criticality exists for the phantom AdS black hole in the canonical ensemble, which is different from the RN-AdS black hole. Contrary to the canonical ensemble, no critical point can be found for neither phantom AdS black holes nor RN-AdS black hole in the grand-canonical ensemble. Moreover, we study the specific ","authors_text":"Jie-Xiong Mo, Shan-quan Lan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-07T00:39:02Z","title":"Phase transition and heat engine efficiency of phantom AdS black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02491","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":"sha256:765ff18734b52884091d220e264bcbf2aa7d0c821ebc4a522885ebba68801308","target":"record","created_at":"2026-05-18T00:04:49Z","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":"0c5b8feef43873227c92775ece7c67e72025ffef9d63dc723cde676ebd4ab094","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-07T00:39:02Z","title_canon_sha256":"9312973ba027084ce318cc1abcda19a2465975651987ff8f2ee9057e4a4143c6"},"schema_version":"1.0","source":{"id":"1803.02491","kind":"arxiv","version":1}},"canonical_sha256":"abc4e588293250355eb2e6b89012dce82cafe58d2901182b93c25fd4eb9f7bdd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abc4e588293250355eb2e6b89012dce82cafe58d2901182b93c25fd4eb9f7bdd","first_computed_at":"2026-05-18T00:04:49.616457Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:49.616457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0izpLyQfRRVNAZQ5UwhJ0dObyMxNviJmC/NSSr7xKldjKo9X6Br/O4NBKbuY0WPcz/5LtGGBKzvBkYWBwYTDBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:49.617134Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.02491","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:765ff18734b52884091d220e264bcbf2aa7d0c821ebc4a522885ebba68801308","sha256:839a762e3227649d6d64e45213a48e8fba5ba87e3a54a0fd0489cc2ee0152fe1"],"state_sha256":"4ab5b57e823e3e71c24261099f04a3373b0d2b748a3f4ac8cfb8e143e040b559"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SvBZ8OCvSYxWw/v3T9GXOqooyNjX5OXKNMx7qa1LpEmbL9hKFkI8pWTvv9xujqt7b9REnvJXeZ+Sv7cdq8TMCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T14:14:41.708999Z","bundle_sha256":"39c15c7eead9475bc0936c08d68de059a15ea01c525bc4b5db19f69a8047c1df"}}