{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:6LUOUC76DQK6A6OUVC4IS3YA2V","short_pith_number":"pith:6LUOUC76","canonical_record":{"source":{"id":"1602.09031","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2016-02-29T16:28:26Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4beea57d49e2242ca57c71522dcc0ec73cc1b34ecb1f663852daee165c38fde2","abstract_canon_sha256":"b124a08f330bf8235e008c4239649e629a241905a2cd7523b0f9b3e7d6224c7f"},"schema_version":"1.0"},"canonical_sha256":"f2e8ea0bfe1c15e079d4a8b8896f00d552cf9c0c9cd534c828acd44ab50772ae","source":{"kind":"arxiv","id":"1602.09031","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.09031","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"1602.09031v2","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.09031","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"6LUOUC76DQK6","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6LUOUC76DQK6A6OU","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6LUOUC76","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:6LUOUC76DQK6A6OUVC4IS3YA2V","target":"record","payload":{"canonical_record":{"source":{"id":"1602.09031","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2016-02-29T16:28:26Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4beea57d49e2242ca57c71522dcc0ec73cc1b34ecb1f663852daee165c38fde2","abstract_canon_sha256":"b124a08f330bf8235e008c4239649e629a241905a2cd7523b0f9b3e7d6224c7f"},"schema_version":"1.0"},"canonical_sha256":"f2e8ea0bfe1c15e079d4a8b8896f00d552cf9c0c9cd534c828acd44ab50772ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:24.015617Z","signature_b64":"/0UnUKK9he1HmyNpBkcXRxt4LDFx9LDb9Ea71A0mv3s3suUinF5qPJIaC/ZzS6dZRw0Z9pwJutYjluz4e0S/Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2e8ea0bfe1c15e079d4a8b8896f00d552cf9c0c9cd534c828acd44ab50772ae","last_reissued_at":"2026-05-18T01:19:24.015001Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:24.015001Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.09031","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":"2026-05-18T01:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Th36n7uM/dqi+oDML9glu3X1Dpz2I1nEWR1+41cy8xh4Cf+Cr/kH+P86v7BX+028RZ678jKv3L2yUYm4ASRvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T13:04:02.258166Z"},"content_sha256":"d68a8b2bbc881786560e81a015080435f7faf9e9be14d122374083a346b4de70","schema_version":"1.0","event_id":"sha256:d68a8b2bbc881786560e81a015080435f7faf9e9be14d122374083a346b4de70"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:6LUOUC76DQK6A6OUVC4IS3YA2V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab initio determination of effective electron-phonon coupling factor in copper","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.comp-ph","authors_text":"Pengfei Ji, Yuwen Zhang","submitted_at":"2016-02-29T16:28:26Z","abstract_excerpt":"The electron temperature dependent electron density of states, Fermi-Dirac distribution, and electron-phonon spectral function are computed as prerequisites before achieving effective electron-phonon coupling factor. The obtained coupling factor is implemented into a molecular dynamics (MD) and two-temperature model (TTM) coupled simulation of femtosecond laser heating. By monitoring temperature evolutions of electron and lattice subsystems, the result utilizing coupling factor from ab initio calculation, shows a faster decrease of electron temperature and increase of lattice temperature than "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.09031","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":"2026-05-18T01:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+8mu5bZNHgIFHSBbhoB+W0fBuHcZ0+A9Nu+Ji4yJOqTQ7ikOv4N5r2lyHfUQSDQ5S/1/vyAl3nVWHz4LrEHvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T13:04:02.258543Z"},"content_sha256":"70515be0195566fa610b72e752af912bbc60bc2d49d7cae5ffc8fe73685357b1","schema_version":"1.0","event_id":"sha256:70515be0195566fa610b72e752af912bbc60bc2d49d7cae5ffc8fe73685357b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/bundle.json","state_url":"https://pith.science/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/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":"2026-06-26T13:04:02Z","links":{"resolver":"https://pith.science/pith/6LUOUC76DQK6A6OUVC4IS3YA2V","bundle":"https://pith.science/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/bundle.json","state":"https://pith.science/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6LUOUC76DQK6A6OUVC4IS3YA2V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:6LUOUC76DQK6A6OUVC4IS3YA2V","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":"b124a08f330bf8235e008c4239649e629a241905a2cd7523b0f9b3e7d6224c7f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2016-02-29T16:28:26Z","title_canon_sha256":"4beea57d49e2242ca57c71522dcc0ec73cc1b34ecb1f663852daee165c38fde2"},"schema_version":"1.0","source":{"id":"1602.09031","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.09031","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"1602.09031v2","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.09031","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"6LUOUC76DQK6","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6LUOUC76DQK6A6OU","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6LUOUC76","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:70515be0195566fa610b72e752af912bbc60bc2d49d7cae5ffc8fe73685357b1","target":"graph","created_at":"2026-05-18T01:19:24Z","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":"The electron temperature dependent electron density of states, Fermi-Dirac distribution, and electron-phonon spectral function are computed as prerequisites before achieving effective electron-phonon coupling factor. The obtained coupling factor is implemented into a molecular dynamics (MD) and two-temperature model (TTM) coupled simulation of femtosecond laser heating. By monitoring temperature evolutions of electron and lattice subsystems, the result utilizing coupling factor from ab initio calculation, shows a faster decrease of electron temperature and increase of lattice temperature than ","authors_text":"Pengfei Ji, Yuwen Zhang","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2016-02-29T16:28:26Z","title":"Ab initio determination of effective electron-phonon coupling factor in copper"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.09031","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:d68a8b2bbc881786560e81a015080435f7faf9e9be14d122374083a346b4de70","target":"record","created_at":"2026-05-18T01:19:24Z","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":"b124a08f330bf8235e008c4239649e629a241905a2cd7523b0f9b3e7d6224c7f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2016-02-29T16:28:26Z","title_canon_sha256":"4beea57d49e2242ca57c71522dcc0ec73cc1b34ecb1f663852daee165c38fde2"},"schema_version":"1.0","source":{"id":"1602.09031","kind":"arxiv","version":2}},"canonical_sha256":"f2e8ea0bfe1c15e079d4a8b8896f00d552cf9c0c9cd534c828acd44ab50772ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2e8ea0bfe1c15e079d4a8b8896f00d552cf9c0c9cd534c828acd44ab50772ae","first_computed_at":"2026-05-18T01:19:24.015001Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:24.015001Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/0UnUKK9he1HmyNpBkcXRxt4LDFx9LDb9Ea71A0mv3s3suUinF5qPJIaC/ZzS6dZRw0Z9pwJutYjluz4e0S/Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:24.015617Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.09031","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d68a8b2bbc881786560e81a015080435f7faf9e9be14d122374083a346b4de70","sha256:70515be0195566fa610b72e752af912bbc60bc2d49d7cae5ffc8fe73685357b1"],"state_sha256":"9b2ed8bb83adfae77e23e7a668da477a8558607d47203057acb3a06412bae672"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HDO3vj1AHIrQYC4GFcf9DRbQYa4Pq4i+cc3b0xyhNA/8eZ7nxxdcbBKHYsHBHgDT/qriPMDrfDtZJ2Vq88XlCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T13:04:02.260546Z","bundle_sha256":"91606b9bdbff8086932597efd87fed698657d77578b660928fe676d33c22fe92"}}