{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:5EC3O67ZRSMHHRZ4N4Y7KXIWJA","short_pith_number":"pith:5EC3O67Z","canonical_record":{"source":{"id":"1402.2341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-02-11T00:48:50Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"47c9d71caa54495193634e709b3175bba7c3ae8c1534616c6bdeed3c0ebac2fc","abstract_canon_sha256":"7191a0afa7281f73bc14905e6be7125841db9c4ce4e0d2fe1709a64c7b523861"},"schema_version":"1.0"},"canonical_sha256":"e905b77bf98c9873c73c6f31f55d16480a1483c7afd98d3930786273c0eefa07","source":{"kind":"arxiv","id":"1402.2341","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.2341","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"arxiv_version","alias_value":"1402.2341v1","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.2341","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"pith_short_12","alias_value":"5EC3O67ZRSMH","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5EC3O67ZRSMHHRZ4","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5EC3O67Z","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:5EC3O67ZRSMHHRZ4N4Y7KXIWJA","target":"record","payload":{"canonical_record":{"source":{"id":"1402.2341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-02-11T00:48:50Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"47c9d71caa54495193634e709b3175bba7c3ae8c1534616c6bdeed3c0ebac2fc","abstract_canon_sha256":"7191a0afa7281f73bc14905e6be7125841db9c4ce4e0d2fe1709a64c7b523861"},"schema_version":"1.0"},"canonical_sha256":"e905b77bf98c9873c73c6f31f55d16480a1483c7afd98d3930786273c0eefa07","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:31.072579Z","signature_b64":"ns4B5kCRXp6qeMPxjyKeccPvCv2QkVrnCUUXgjL1vx8+ZVbnt7w55PHemfU5LrcnWYaCzPQFlq5W1ZJ+9j0OAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e905b77bf98c9873c73c6f31f55d16480a1483c7afd98d3930786273c0eefa07","last_reissued_at":"2026-05-18T02:59:31.071801Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:31.071801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.2341","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":"2026-05-18T02:59:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZNiF6rOwA0Q+Q+ZgM67QHoHUX34T9dbYPMFeLpuyagJ+QmI9n8mFwXXc8F1hkXjvssMx29qhsFTup7h0KF7kCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:09:39.281927Z"},"content_sha256":"a98ad3f5e030593f5fcb0db3a18b6725e8de9b80a3313f98a94aa88435e6e361","schema_version":"1.0","event_id":"sha256:a98ad3f5e030593f5fcb0db3a18b6725e8de9b80a3313f98a94aa88435e6e361"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:5EC3O67ZRSMHHRZ4N4Y7KXIWJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New insight into the Berezinskii-Kosterlitz-Thouless phase transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"hep-lat","authors_text":"Fernando G Rej\\'on-Barrera, Urs Gerber, Wolfgang Bietenholz","submitted_at":"2014-02-11T00:48:50Z","abstract_excerpt":"We investigate the 2d XY model by using the constraint angle action, which belongs to the class of topological lattice actions. These actions violate important features usually demanded for a lattice action, such as the correct classical continuum limit and the applicability of perturbation theory. Nevertheless, they still lead to the same universal quantum continuum limit and show excellent scaling behavior. By using the constraint angle action we gain new insight into the Berezinskii-Kosterlitz-Thouless phase transition of the 2d XY model. This phase transition is of special interest since i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.2341","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":"2026-05-18T02:59:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cnfU5OfS5uwmOn7VBoXI65j3EVlGl2WJCRTLwCuoKptlKDOoq3E6Ftgbd+eMZyKRqeWw9jgXje+8tm1iL8pABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:09:39.282611Z"},"content_sha256":"ac805c269647f5cec6f23f13f721096cdc7979345a736cf4fd789e382e93d360","schema_version":"1.0","event_id":"sha256:ac805c269647f5cec6f23f13f721096cdc7979345a736cf4fd789e382e93d360"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/bundle.json","state_url":"https://pith.science/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/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":"2026-06-09T05:09:39Z","links":{"resolver":"https://pith.science/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA","bundle":"https://pith.science/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/bundle.json","state":"https://pith.science/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5EC3O67ZRSMHHRZ4N4Y7KXIWJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5EC3O67ZRSMHHRZ4N4Y7KXIWJA","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":"7191a0afa7281f73bc14905e6be7125841db9c4ce4e0d2fe1709a64c7b523861","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-02-11T00:48:50Z","title_canon_sha256":"47c9d71caa54495193634e709b3175bba7c3ae8c1534616c6bdeed3c0ebac2fc"},"schema_version":"1.0","source":{"id":"1402.2341","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.2341","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"arxiv_version","alias_value":"1402.2341v1","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.2341","created_at":"2026-05-18T02:59:31Z"},{"alias_kind":"pith_short_12","alias_value":"5EC3O67ZRSMH","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5EC3O67ZRSMHHRZ4","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5EC3O67Z","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:ac805c269647f5cec6f23f13f721096cdc7979345a736cf4fd789e382e93d360","target":"graph","created_at":"2026-05-18T02:59:31Z","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 investigate the 2d XY model by using the constraint angle action, which belongs to the class of topological lattice actions. These actions violate important features usually demanded for a lattice action, such as the correct classical continuum limit and the applicability of perturbation theory. Nevertheless, they still lead to the same universal quantum continuum limit and show excellent scaling behavior. By using the constraint angle action we gain new insight into the Berezinskii-Kosterlitz-Thouless phase transition of the 2d XY model. This phase transition is of special interest since i","authors_text":"Fernando G Rej\\'on-Barrera, Urs Gerber, Wolfgang Bietenholz","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-02-11T00:48:50Z","title":"New insight into the Berezinskii-Kosterlitz-Thouless phase transition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.2341","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:a98ad3f5e030593f5fcb0db3a18b6725e8de9b80a3313f98a94aa88435e6e361","target":"record","created_at":"2026-05-18T02:59:31Z","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":"7191a0afa7281f73bc14905e6be7125841db9c4ce4e0d2fe1709a64c7b523861","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-02-11T00:48:50Z","title_canon_sha256":"47c9d71caa54495193634e709b3175bba7c3ae8c1534616c6bdeed3c0ebac2fc"},"schema_version":"1.0","source":{"id":"1402.2341","kind":"arxiv","version":1}},"canonical_sha256":"e905b77bf98c9873c73c6f31f55d16480a1483c7afd98d3930786273c0eefa07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e905b77bf98c9873c73c6f31f55d16480a1483c7afd98d3930786273c0eefa07","first_computed_at":"2026-05-18T02:59:31.071801Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:31.071801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ns4B5kCRXp6qeMPxjyKeccPvCv2QkVrnCUUXgjL1vx8+ZVbnt7w55PHemfU5LrcnWYaCzPQFlq5W1ZJ+9j0OAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:31.072579Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.2341","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a98ad3f5e030593f5fcb0db3a18b6725e8de9b80a3313f98a94aa88435e6e361","sha256:ac805c269647f5cec6f23f13f721096cdc7979345a736cf4fd789e382e93d360"],"state_sha256":"9f736a8ada2815d5d9fe9f294dcbc53b79f23990591ec79fd1184fba8226db8b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W5uaHDMDMHq87HknWgz5ouLzejQTpgc7DliOm6bI34RDybA2WTm63933Hqhv1okpayFm1ZOovn147DPFa8GbBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T05:09:39.286274Z","bundle_sha256":"cbdc57d2c2e29bacd95f10d22d1fbe43baf39fe61f973759ef9c6c1b2e8fc438"}}