{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:KGIBPVB3TEOWXCEDKKRJ6YIYQH","short_pith_number":"pith:KGIBPVB3","canonical_record":{"source":{"id":"cond-mat/0103469","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-03-22T19:09:01Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"e406cc7ec1ee1074d3fef1970caf3ddf0e7d33d9994ba31f96787c3c1552f048","abstract_canon_sha256":"e79694d1fd7e91721ec0477c252971698b8c92c5999a061f0c2bae46e60a1df2"},"schema_version":"1.0"},"canonical_sha256":"519017d43b991d6b888352a29f611881fe7ddcdada49f000c682da02bb6de579","source":{"kind":"arxiv","id":"cond-mat/0103469","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0103469","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0103469v2","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0103469","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_12","alias_value":"KGIBPVB3TEOW","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_16","alias_value":"KGIBPVB3TEOWXCED","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_8","alias_value":"KGIBPVB3","created_at":"2026-07-04T16:25:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:KGIBPVB3TEOWXCEDKKRJ6YIYQH","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0103469","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-03-22T19:09:01Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"e406cc7ec1ee1074d3fef1970caf3ddf0e7d33d9994ba31f96787c3c1552f048","abstract_canon_sha256":"e79694d1fd7e91721ec0477c252971698b8c92c5999a061f0c2bae46e60a1df2"},"schema_version":"1.0"},"canonical_sha256":"519017d43b991d6b888352a29f611881fe7ddcdada49f000c682da02bb6de579","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:25:11.871882Z","signature_b64":"G0MArZKXfF86i/AmKTyU0Nq4znj2QOK4vUXu/JfvMDFygj6TCptknb6OePn60gLY6Xx1tRO1PbSM4Os/zjwHAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"519017d43b991d6b888352a29f611881fe7ddcdada49f000c682da02bb6de579","last_reissued_at":"2026-07-04T16:25:11.871482Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:25:11.871482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0103469","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":"2026-07-04T16:25:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fpcQGm5VkYeqoFVnplq1iTgyShZz+KyVCZy+j8qkzwyqDKD6L2QcvFs+PnVb/imkrej4EwMuGMV2xd2WHBXJCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:19:04.989779Z"},"content_sha256":"7c5702eb4753e8d059788116c6180b537da5d351fe32792fc1e847e46566f4be","schema_version":"1.0","event_id":"sha256:7c5702eb4753e8d059788116c6180b537da5d351fe32792fc1e847e46566f4be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:KGIBPVB3TEOWXCEDKKRJ6YIYQH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Giant anharmonicity and non-linear electron-phonon coupling in MgB$_{2}$; A combined first-principles calculations and neutron scattering study","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. M. Brown, H. Z. Qing, J.S. Slusky, J. W. Lynn, K.A. Regan, K. Inumaru, M.A. Hayward, M.K. Haas, N. Rogado, O. Gulseren, P. Khalifah, R.J. Cava, T. He, T. J. Udovic, T. Yildirim","submitted_at":"2001-03-22T19:09:01Z","abstract_excerpt":"We report first-principles calculations of the electronic band structure and lattice dynamics for the new superconductor MgB$_{2}$. The excellent agreement between theory and our inelastic neutron scattering measurements of the phonon density of states gives confidence that the calculations provide a sound description of the physical properties of the system. The numerical results reveal that the in-plane boron phonons (with E$_{2g}$ symmetry) near the zone-center are very anharmonic, and are strongly coupled to the partially occupied planar B $\\sigma$ bands near the Fermi level. This giant an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0103469","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/cond-mat/0103469/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":"2026-07-04T16:25:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PxIdEkoPUwpK7d8IX1crZh7AKz1ZzKlW2PQg4mMkVV9Is6sgZ57cN30FJFAsMQjztVMbD0RQWb9QqDqZ/IgZBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:19:04.990245Z"},"content_sha256":"896669589eaa7c28d14fd6c62a112a6024ba1be40088814a51a05167dd613394","schema_version":"1.0","event_id":"sha256:896669589eaa7c28d14fd6c62a112a6024ba1be40088814a51a05167dd613394"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/bundle.json","state_url":"https://pith.science/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/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":"2026-07-07T12:19:04Z","links":{"resolver":"https://pith.science/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH","bundle":"https://pith.science/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/bundle.json","state":"https://pith.science/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KGIBPVB3TEOWXCEDKKRJ6YIYQH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:KGIBPVB3TEOWXCEDKKRJ6YIYQH","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":"e79694d1fd7e91721ec0477c252971698b8c92c5999a061f0c2bae46e60a1df2","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-03-22T19:09:01Z","title_canon_sha256":"e406cc7ec1ee1074d3fef1970caf3ddf0e7d33d9994ba31f96787c3c1552f048"},"schema_version":"1.0","source":{"id":"cond-mat/0103469","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0103469","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0103469v2","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0103469","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_12","alias_value":"KGIBPVB3TEOW","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_16","alias_value":"KGIBPVB3TEOWXCED","created_at":"2026-07-04T16:25:11Z"},{"alias_kind":"pith_short_8","alias_value":"KGIBPVB3","created_at":"2026-07-04T16:25:11Z"}],"graph_snapshots":[{"event_id":"sha256:896669589eaa7c28d14fd6c62a112a6024ba1be40088814a51a05167dd613394","target":"graph","created_at":"2026-07-04T16:25:11Z","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/cond-mat/0103469/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report first-principles calculations of the electronic band structure and lattice dynamics for the new superconductor MgB$_{2}$. The excellent agreement between theory and our inelastic neutron scattering measurements of the phonon density of states gives confidence that the calculations provide a sound description of the physical properties of the system. The numerical results reveal that the in-plane boron phonons (with E$_{2g}$ symmetry) near the zone-center are very anharmonic, and are strongly coupled to the partially occupied planar B $\\sigma$ bands near the Fermi level. This giant an","authors_text":"C. M. Brown, H. Z. Qing, J.S. Slusky, J. W. Lynn, K.A. Regan, K. Inumaru, M.A. Hayward, M.K. Haas, N. Rogado, O. Gulseren, P. Khalifah, R.J. Cava, T. He, T. J. Udovic, T. Yildirim","cross_cats":["cond-mat.supr-con"],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-03-22T19:09:01Z","title":"Giant anharmonicity and non-linear electron-phonon coupling in MgB$_{2}$; A combined first-principles calculations and neutron scattering study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0103469","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":"sha256:7c5702eb4753e8d059788116c6180b537da5d351fe32792fc1e847e46566f4be","target":"record","created_at":"2026-07-04T16:25:11Z","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":"e79694d1fd7e91721ec0477c252971698b8c92c5999a061f0c2bae46e60a1df2","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2001-03-22T19:09:01Z","title_canon_sha256":"e406cc7ec1ee1074d3fef1970caf3ddf0e7d33d9994ba31f96787c3c1552f048"},"schema_version":"1.0","source":{"id":"cond-mat/0103469","kind":"arxiv","version":2}},"canonical_sha256":"519017d43b991d6b888352a29f611881fe7ddcdada49f000c682da02bb6de579","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"519017d43b991d6b888352a29f611881fe7ddcdada49f000c682da02bb6de579","first_computed_at":"2026-07-04T16:25:11.871482Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:25:11.871482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G0MArZKXfF86i/AmKTyU0Nq4znj2QOK4vUXu/JfvMDFygj6TCptknb6OePn60gLY6Xx1tRO1PbSM4Os/zjwHAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:25:11.871882Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0103469","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c5702eb4753e8d059788116c6180b537da5d351fe32792fc1e847e46566f4be","sha256:896669589eaa7c28d14fd6c62a112a6024ba1be40088814a51a05167dd613394"],"state_sha256":"dd532439153858a911b068d709d2f5f8ab07fe9cfac3baa3cea05fc41dbc711b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bEcZ0AkfmZundaiAf+b4xo90ArWlodjNZkPX0JlF3zo4L6Zq8bNM7xPkneF/X3ElmUkr2g9zEx5zSmGSxxbXDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T12:19:04.992420Z","bundle_sha256":"c59c2d8d5051a85d3deeaf430814387fb59ef8a20b81de853a0bee93d3effb43"}}