{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WMAOWUEVYO43FBTTVQDP2QD74Z","short_pith_number":"pith:WMAOWUEV","canonical_record":{"source":{"id":"1901.03072","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-10T09:33:18Z","cross_cats_sorted":[],"title_canon_sha256":"6914b974e1f314245dabfde13be177ddd0e5abe51d5a92aec80e5e787236031e","abstract_canon_sha256":"8e96523576f12f53fb5611e5df087172969c7906020f32a0b196a805105c1485"},"schema_version":"1.0"},"canonical_sha256":"b300eb5095c3b9b28673ac06fd407fe6704a07e1aacc47718735fa76e25b5d71","source":{"kind":"arxiv","id":"1901.03072","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03072","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03072v2","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03072","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"pith_short_12","alias_value":"WMAOWUEVYO43","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WMAOWUEVYO43FBTT","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WMAOWUEV","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WMAOWUEVYO43FBTTVQDP2QD74Z","target":"record","payload":{"canonical_record":{"source":{"id":"1901.03072","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-10T09:33:18Z","cross_cats_sorted":[],"title_canon_sha256":"6914b974e1f314245dabfde13be177ddd0e5abe51d5a92aec80e5e787236031e","abstract_canon_sha256":"8e96523576f12f53fb5611e5df087172969c7906020f32a0b196a805105c1485"},"schema_version":"1.0"},"canonical_sha256":"b300eb5095c3b9b28673ac06fd407fe6704a07e1aacc47718735fa76e25b5d71","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:26.902608Z","signature_b64":"l/ys9TNNx+6yBuhpn8ooBgUq48cu8cKBc+YwN8Ayx1F3FWI++9gUWsWjP42eedSAVW1gehVbTirs/VlJt5zPBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b300eb5095c3b9b28673ac06fd407fe6704a07e1aacc47718735fa76e25b5d71","last_reissued_at":"2026-05-17T23:55:26.902218Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:26.902218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.03072","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":"2026-05-17T23:55:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DC7MdDeeNPrvO2p4tab1yAz49g3tZJEsuz2UMGxTURW2o0h6rhHuKU0e5/uDDOZjyzc8s3Hfi2s3B5gmjcFEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:24:50.505006Z"},"content_sha256":"7e36e2bbf096c4d57b3f6132c35e8943b7be6b28b49e086979dc07d57f3625c6","schema_version":"1.0","event_id":"sha256:7e36e2bbf096c4d57b3f6132c35e8943b7be6b28b49e086979dc07d57f3625c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WMAOWUEVYO43FBTTVQDP2QD74Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrafast magnetization dynamics in uniaxial ferrimagnets with compensation point. GdFeCo","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. K. Zvezdin, A. V. Kimel, K. A. Zvezdin, M. D. Davydova","submitted_at":"2019-01-10T09:33:18Z","abstract_excerpt":"We derive an effective Lagrangian in the quasi-antiferromagnetic approximation that allows to describe the magnetization dynamics for uniaxial f-d (rare-earth - transition metal) ferrimagnet near the magnetization compensation point in the presence of external magnetic field. We perform calculations for the parameters of GdFeCo, a metallic ferrimagnet with compensation point that is one of the most promising materials in ultrafast magnetism. Using the developed approach, we find the torque that acts on the magnetization due to ultrafast demagnetization pulse that can be caused either by ultras"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03072","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":""},"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":"2026-05-17T23:55:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NjQZA+YC31hu11yXciuGPtIa1zKraJLx4rN6J+/GN6rDlOF0sosefLb5c2UlzS68HHcf/s0aDQchNE0+AumuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:24:50.505698Z"},"content_sha256":"2a90d8f2978f3304d5fc623d7ccb875a1dfd399bc083f0eab49c40647867238e","schema_version":"1.0","event_id":"sha256:2a90d8f2978f3304d5fc623d7ccb875a1dfd399bc083f0eab49c40647867238e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/bundle.json","state_url":"https://pith.science/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/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":"2026-05-27T04:24:50Z","links":{"resolver":"https://pith.science/pith/WMAOWUEVYO43FBTTVQDP2QD74Z","bundle":"https://pith.science/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/bundle.json","state":"https://pith.science/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WMAOWUEVYO43FBTTVQDP2QD74Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WMAOWUEVYO43FBTTVQDP2QD74Z","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":"8e96523576f12f53fb5611e5df087172969c7906020f32a0b196a805105c1485","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-10T09:33:18Z","title_canon_sha256":"6914b974e1f314245dabfde13be177ddd0e5abe51d5a92aec80e5e787236031e"},"schema_version":"1.0","source":{"id":"1901.03072","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.03072","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"arxiv_version","alias_value":"1901.03072v2","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.03072","created_at":"2026-05-17T23:55:26Z"},{"alias_kind":"pith_short_12","alias_value":"WMAOWUEVYO43","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WMAOWUEVYO43FBTT","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WMAOWUEV","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:2a90d8f2978f3304d5fc623d7ccb875a1dfd399bc083f0eab49c40647867238e","target":"graph","created_at":"2026-05-17T23:55:26Z","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 derive an effective Lagrangian in the quasi-antiferromagnetic approximation that allows to describe the magnetization dynamics for uniaxial f-d (rare-earth - transition metal) ferrimagnet near the magnetization compensation point in the presence of external magnetic field. We perform calculations for the parameters of GdFeCo, a metallic ferrimagnet with compensation point that is one of the most promising materials in ultrafast magnetism. Using the developed approach, we find the torque that acts on the magnetization due to ultrafast demagnetization pulse that can be caused either by ultras","authors_text":"A. K. Zvezdin, A. V. Kimel, K. A. Zvezdin, M. D. Davydova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-10T09:33:18Z","title":"Ultrafast magnetization dynamics in uniaxial ferrimagnets with compensation point. GdFeCo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.03072","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":"sha256:7e36e2bbf096c4d57b3f6132c35e8943b7be6b28b49e086979dc07d57f3625c6","target":"record","created_at":"2026-05-17T23:55:26Z","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":"8e96523576f12f53fb5611e5df087172969c7906020f32a0b196a805105c1485","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-10T09:33:18Z","title_canon_sha256":"6914b974e1f314245dabfde13be177ddd0e5abe51d5a92aec80e5e787236031e"},"schema_version":"1.0","source":{"id":"1901.03072","kind":"arxiv","version":2}},"canonical_sha256":"b300eb5095c3b9b28673ac06fd407fe6704a07e1aacc47718735fa76e25b5d71","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b300eb5095c3b9b28673ac06fd407fe6704a07e1aacc47718735fa76e25b5d71","first_computed_at":"2026-05-17T23:55:26.902218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:26.902218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l/ys9TNNx+6yBuhpn8ooBgUq48cu8cKBc+YwN8Ayx1F3FWI++9gUWsWjP42eedSAVW1gehVbTirs/VlJt5zPBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:26.902608Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.03072","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e36e2bbf096c4d57b3f6132c35e8943b7be6b28b49e086979dc07d57f3625c6","sha256:2a90d8f2978f3304d5fc623d7ccb875a1dfd399bc083f0eab49c40647867238e"],"state_sha256":"dbeeb3897dddbe6891cf5feb871fe81a3dc525422f60fe6c0867b72506e451d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j/fnK1//Skob+2I6W2gl9q73dlc8x1USY5KF157mqslqMJz2R3L5d4XZjOn1J5U3vV3NIZ5olO4Jj7G+p+iDBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:24:50.508927Z","bundle_sha256":"c6e6b1d1c527caff5e85fc7787a875cea3d15de947264ac25639d330fd9ca99c"}}