{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:FSAMZ5W7ULGQXIVQC24NEVUZOL","short_pith_number":"pith:FSAMZ5W7","canonical_record":{"source":{"id":"2512.15418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-12-17T13:05:37Z","cross_cats_sorted":[],"title_canon_sha256":"3d4802f9030a7f56a4dd92c27f97fe18c60ade7138608460512daee3658b27bd","abstract_canon_sha256":"8b63d65ca123648a2fe98e1e8c985536f1274d4c3952a0bd6c59ee236d0896b8"},"schema_version":"1.0"},"canonical_sha256":"2c80ccf6dfa2cd0ba2b016b8d2569972e9d636b4d53bc2ace946f2079f232701","source":{"kind":"arxiv","id":"2512.15418","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.15418","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"2512.15418v2","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.15418","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"FSAMZ5W7ULGQ","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_16","alias_value":"FSAMZ5W7ULGQXIVQ","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_8","alias_value":"FSAMZ5W7","created_at":"2026-07-28T00:21:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:FSAMZ5W7ULGQXIVQC24NEVUZOL","target":"record","payload":{"canonical_record":{"source":{"id":"2512.15418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-12-17T13:05:37Z","cross_cats_sorted":[],"title_canon_sha256":"3d4802f9030a7f56a4dd92c27f97fe18c60ade7138608460512daee3658b27bd","abstract_canon_sha256":"8b63d65ca123648a2fe98e1e8c985536f1274d4c3952a0bd6c59ee236d0896b8"},"schema_version":"1.0"},"canonical_sha256":"2c80ccf6dfa2cd0ba2b016b8d2569972e9d636b4d53bc2ace946f2079f232701","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-28T00:21:33.239654Z","signature_b64":"VflbpW2CfP05Z4Q3BUbewzvSjo8df807p18tZmtreT4ohdViPVOA513GcZ1Y+6p6DA1Hs5fiZ9yjX5ferUw0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c80ccf6dfa2cd0ba2b016b8d2569972e9d636b4d53bc2ace946f2079f232701","last_reissued_at":"2026-07-28T00:21:33.238649Z","signature_status":"signed_v1","first_computed_at":"2026-07-28T00:21:33.238649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2512.15418","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-28T00:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rkj/2nPbjNOTib4uOEzoXw3YCxRxq11hQKFw/GfYlbQ57GZS3mwcXMjOkW3k+zelghDvqpcuomN20WGB//VKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T23:20:42.618561Z"},"content_sha256":"c6df82f030bcc04c39593182a733be2a04f7700819e8cbb90a91bcd6f10554aa","schema_version":"1.0","event_id":"sha256:c6df82f030bcc04c39593182a733be2a04f7700819e8cbb90a91bcd6f10554aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:FSAMZ5W7ULGQXIVQC24NEVUZOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the nature of the QCD chiral phase transition with imaginary chemical potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Alfredo D'Ambrosio, Michael Fromm, Owe Philipsen, Reinhold Kaiser","submitted_at":"2025-12-17T13:05:37Z","abstract_excerpt":"The order of the thermal chiral phase transition in lattice QCD is known to be strongly cutoff-dependent. A previous study using $N_\\mathrm{f}\\in[2,6]$ mass-degenerate, unimproved staggered quark flavours on $N_\\tau\\in\\{4,6,8\\}$ lattices found that the bare mass regions displaying explicit first-order transitions shrink to zero, with their critical boundary line terminating in a tricritical point before the continuum limit is reached. Here we perform an analogous study for fixed imaginary baryon chemical potential and find the same behaviour: first-order regions observed on coarse lattices dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.15418","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/2512.15418/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":"2026-07-28T00:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oGbuwxsRRNOgwagMGkEV6q6fZ4kDNhmeAleXTaohlbwQ2HYiUstp1fZLgJjZ7Z7bBzCFOszG57g8rH0/7AT5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T23:20:42.619418Z"},"content_sha256":"163801daaf39feef436c05c89d1a4ce57aeb561454a9099082254805051f37fa","schema_version":"1.0","event_id":"sha256:163801daaf39feef436c05c89d1a4ce57aeb561454a9099082254805051f37fa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/bundle.json","state_url":"https://pith.science/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/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":"2026-08-03T23:20:42Z","links":{"resolver":"https://pith.science/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL","bundle":"https://pith.science/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/bundle.json","state":"https://pith.science/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FSAMZ5W7ULGQXIVQC24NEVUZOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:FSAMZ5W7ULGQXIVQC24NEVUZOL","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":"8b63d65ca123648a2fe98e1e8c985536f1274d4c3952a0bd6c59ee236d0896b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-12-17T13:05:37Z","title_canon_sha256":"3d4802f9030a7f56a4dd92c27f97fe18c60ade7138608460512daee3658b27bd"},"schema_version":"1.0","source":{"id":"2512.15418","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.15418","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"2512.15418v2","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.15418","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"FSAMZ5W7ULGQ","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_16","alias_value":"FSAMZ5W7ULGQXIVQ","created_at":"2026-07-28T00:21:33Z"},{"alias_kind":"pith_short_8","alias_value":"FSAMZ5W7","created_at":"2026-07-28T00:21:33Z"}],"graph_snapshots":[{"event_id":"sha256:163801daaf39feef436c05c89d1a4ce57aeb561454a9099082254805051f37fa","target":"graph","created_at":"2026-07-28T00:21:33Z","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/2512.15418/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The order of the thermal chiral phase transition in lattice QCD is known to be strongly cutoff-dependent. A previous study using $N_\\mathrm{f}\\in[2,6]$ mass-degenerate, unimproved staggered quark flavours on $N_\\tau\\in\\{4,6,8\\}$ lattices found that the bare mass regions displaying explicit first-order transitions shrink to zero, with their critical boundary line terminating in a tricritical point before the continuum limit is reached. Here we perform an analogous study for fixed imaginary baryon chemical potential and find the same behaviour: first-order regions observed on coarse lattices dis","authors_text":"Alfredo D'Ambrosio, Michael Fromm, Owe Philipsen, Reinhold Kaiser","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-12-17T13:05:37Z","title":"On the nature of the QCD chiral phase transition with imaginary chemical potential"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.15418","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:c6df82f030bcc04c39593182a733be2a04f7700819e8cbb90a91bcd6f10554aa","target":"record","created_at":"2026-07-28T00:21:33Z","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":"8b63d65ca123648a2fe98e1e8c985536f1274d4c3952a0bd6c59ee236d0896b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-12-17T13:05:37Z","title_canon_sha256":"3d4802f9030a7f56a4dd92c27f97fe18c60ade7138608460512daee3658b27bd"},"schema_version":"1.0","source":{"id":"2512.15418","kind":"arxiv","version":2}},"canonical_sha256":"2c80ccf6dfa2cd0ba2b016b8d2569972e9d636b4d53bc2ace946f2079f232701","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c80ccf6dfa2cd0ba2b016b8d2569972e9d636b4d53bc2ace946f2079f232701","first_computed_at":"2026-07-28T00:21:33.238649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-28T00:21:33.238649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VflbpW2CfP05Z4Q3BUbewzvSjo8df807p18tZmtreT4ohdViPVOA513GcZ1Y+6p6DA1Hs5fiZ9yjX5ferUw0CA==","signature_status":"signed_v1","signed_at":"2026-07-28T00:21:33.239654Z","signed_message":"canonical_sha256_bytes"},"source_id":"2512.15418","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c6df82f030bcc04c39593182a733be2a04f7700819e8cbb90a91bcd6f10554aa","sha256:163801daaf39feef436c05c89d1a4ce57aeb561454a9099082254805051f37fa"],"state_sha256":"d1d798d2fb5b548060c01c251fb6d84835cb197afc5c4aec102b03d7ef8058fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qE0OwfaJ45RSVlIPHaEUwISNSIERViyVryhgX0yYHlb1fqVdyKUz7y629I7vVqYhcbJGRB2fUCjt7qRXa3olBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T23:20:42.625319Z","bundle_sha256":"386fac9fa5bb608c34f71789f479195951bb9bdfc879a8edb6a8d233a4814acc"}}