{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:UVHXCJLI4VADVEDL3KGHO3P3YK","short_pith_number":"pith:UVHXCJLI","canonical_record":{"source":{"id":"2605.28761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-05-27T17:19:38Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"af59345959dbb2dc3d2dfbaa874ce0b9bbf0049a22d75a7d81d55914d014e60b","abstract_canon_sha256":"401f8fccdd086213175a06dfd454598cb3b904093db31358e033c8088cc400b1"},"schema_version":"1.0"},"canonical_sha256":"a54f712568e5403a906bda8c776dfbc28c5a1adb43d1e204646f9592a0d4a5f8","source":{"kind":"arxiv","id":"2605.28761","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28761","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28761v1","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28761","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_12","alias_value":"UVHXCJLI4VAD","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_16","alias_value":"UVHXCJLI4VADVEDL","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_8","alias_value":"UVHXCJLI","created_at":"2026-05-28T02:05:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:UVHXCJLI4VADVEDL3KGHO3P3YK","target":"record","payload":{"canonical_record":{"source":{"id":"2605.28761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-05-27T17:19:38Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"af59345959dbb2dc3d2dfbaa874ce0b9bbf0049a22d75a7d81d55914d014e60b","abstract_canon_sha256":"401f8fccdd086213175a06dfd454598cb3b904093db31358e033c8088cc400b1"},"schema_version":"1.0"},"canonical_sha256":"a54f712568e5403a906bda8c776dfbc28c5a1adb43d1e204646f9592a0d4a5f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T02:05:02.287674Z","signature_b64":"Ni0flT9QAVfhGLZpGgIjCkLVP4IeFNd0ipw2I3ahNFs0h7se61HTGFRXb26UUYI/6r9ouAALCyzuNiZ08OZWDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a54f712568e5403a906bda8c776dfbc28c5a1adb43d1e204646f9592a0d4a5f8","last_reissued_at":"2026-05-28T02:05:02.287240Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T02:05:02.287240Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.28761","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":"2026-05-28T02:05:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rPJgLm4APSm7w1neYcN7vCs8ZRFNbYZlILUcfqFZO4IB8X8HS1i4/GbbgRcSedUvv9OXtgr49BzWF3fHagwOAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:51:13.360234Z"},"content_sha256":"40cbb27b2c332f0d21ad6d34932ebb5c995f273a3570812463c80a7158bdf5ce","schema_version":"1.0","event_id":"sha256:40cbb27b2c332f0d21ad6d34932ebb5c995f273a3570812463c80a7158bdf5ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:UVHXCJLI4VADVEDL3KGHO3P3YK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Avoided Stoner instability at a single ordinary Van Hove point","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"A.V. Chubukov, B. Currie, B.V. Svistunov, E. Kozik, I.S. Tupitsyn, N.V. Prokof'ev","submitted_at":"2026-05-27T17:19:38Z","abstract_excerpt":"When the Fermi surface and the Brillouin zone boundary touch at a Van Hove point, mean-field analysis predicts a ferromagnetic (Stoner) instability at finite $T_{MF}$ for any coupling strength due to the divergent density of states. However, the predicted effect has not been observed experimentally. Several qualitative theoretical proposals have been put forward to explain why the mean-field prediction fails. Based on numerically exact results for the two-dimensional Hubbard model with an ordinary Van Hove singularity, we uncover the mechanisms behind the suppression of the ferromagnetic insta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28761","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/2605.28761/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":"2026-05-28T02:05:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BqmT+1h3HF6+xEKjj05yeXBQoL8wJToMNdhY7qGaH5b2QZhtLTiKLoOSrNUmzWAoA1HRxBkk9H9+nQ+1ArpmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:51:13.360628Z"},"content_sha256":"56ec30538b6f84642fd4b5038d709abad76238249d40e396dd77fa80b70d1b50","schema_version":"1.0","event_id":"sha256:56ec30538b6f84642fd4b5038d709abad76238249d40e396dd77fa80b70d1b50"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/bundle.json","state_url":"https://pith.science/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/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":"2026-06-02T17:51:13Z","links":{"resolver":"https://pith.science/pith/UVHXCJLI4VADVEDL3KGHO3P3YK","bundle":"https://pith.science/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/bundle.json","state":"https://pith.science/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UVHXCJLI4VADVEDL3KGHO3P3YK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UVHXCJLI4VADVEDL3KGHO3P3YK","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":"401f8fccdd086213175a06dfd454598cb3b904093db31358e033c8088cc400b1","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-05-27T17:19:38Z","title_canon_sha256":"af59345959dbb2dc3d2dfbaa874ce0b9bbf0049a22d75a7d81d55914d014e60b"},"schema_version":"1.0","source":{"id":"2605.28761","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28761","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28761v1","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28761","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_12","alias_value":"UVHXCJLI4VAD","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_16","alias_value":"UVHXCJLI4VADVEDL","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_8","alias_value":"UVHXCJLI","created_at":"2026-05-28T02:05:02Z"}],"graph_snapshots":[{"event_id":"sha256:56ec30538b6f84642fd4b5038d709abad76238249d40e396dd77fa80b70d1b50","target":"graph","created_at":"2026-05-28T02:05:02Z","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/2605.28761/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"When the Fermi surface and the Brillouin zone boundary touch at a Van Hove point, mean-field analysis predicts a ferromagnetic (Stoner) instability at finite $T_{MF}$ for any coupling strength due to the divergent density of states. However, the predicted effect has not been observed experimentally. Several qualitative theoretical proposals have been put forward to explain why the mean-field prediction fails. Based on numerically exact results for the two-dimensional Hubbard model with an ordinary Van Hove singularity, we uncover the mechanisms behind the suppression of the ferromagnetic insta","authors_text":"A.V. Chubukov, B. Currie, B.V. Svistunov, E. Kozik, I.S. Tupitsyn, N.V. Prokof'ev","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-05-27T17:19:38Z","title":"Avoided Stoner instability at a single ordinary Van Hove point"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28761","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":"sha256:40cbb27b2c332f0d21ad6d34932ebb5c995f273a3570812463c80a7158bdf5ce","target":"record","created_at":"2026-05-28T02:05:02Z","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":"401f8fccdd086213175a06dfd454598cb3b904093db31358e033c8088cc400b1","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-05-27T17:19:38Z","title_canon_sha256":"af59345959dbb2dc3d2dfbaa874ce0b9bbf0049a22d75a7d81d55914d014e60b"},"schema_version":"1.0","source":{"id":"2605.28761","kind":"arxiv","version":1}},"canonical_sha256":"a54f712568e5403a906bda8c776dfbc28c5a1adb43d1e204646f9592a0d4a5f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a54f712568e5403a906bda8c776dfbc28c5a1adb43d1e204646f9592a0d4a5f8","first_computed_at":"2026-05-28T02:05:02.287240Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T02:05:02.287240Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ni0flT9QAVfhGLZpGgIjCkLVP4IeFNd0ipw2I3ahNFs0h7se61HTGFRXb26UUYI/6r9ouAALCyzuNiZ08OZWDg==","signature_status":"signed_v1","signed_at":"2026-05-28T02:05:02.287674Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.28761","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40cbb27b2c332f0d21ad6d34932ebb5c995f273a3570812463c80a7158bdf5ce","sha256:56ec30538b6f84642fd4b5038d709abad76238249d40e396dd77fa80b70d1b50"],"state_sha256":"2ee367ebdb145d2af142a56b3d197c140aecd6aa9a33447c2450113607acbc0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YMHuBKH8ENiT3S9V0BpceZbG1uhAkI9GyFNxrAwZgykdwGcSc2Uo4hOi4WRmbWoUqDKUqZdfJmEgdbi/WjlGDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T17:51:13.364480Z","bundle_sha256":"4e854f4ebfbeb35c2d8ad1b23079916c99a1bb36b7872dc83865d19d6866862f"}}