{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:IHMLAR3F37OYGK7IZOYWAHCLJW","short_pith_number":"pith:IHMLAR3F","schema_version":"1.0","canonical_sha256":"41d8b04765dfdd832be8cbb1601c4b4dbf1811e7b12e68866d2b01732625f1f8","source":{"kind":"arxiv","id":"1608.07517","version":1},"attestation_state":"computed","paper":{"title":"First-Principles Prediction of the Softening of the Silicon Shock Hugoniot Curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Militzer, J. D. Kress, K. P. Driver, L. A. Collins, S. X. Hu","submitted_at":"2016-08-26T16:51:31Z","abstract_excerpt":"Shock compression of silicon (Si) under extremely high pressures (>100 Mbar) was investigated by using two first-principles methods of orbital-free molecular dynamics (OFMD) and path integral Monte Carlo (PIMC). While pressures from the two methods agree very well, PIMC predicts a second compression maximum because of 1s electron ionization that is absent in OFMD calculations since Thomas-Fermi-based theories lack shell structure. The Kohn-Sham density functional theory is used to calculate the equation of state (EOS) of warm dense silicon for low-pressure loadings (P < 100 Mbar). Combining th"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.07517","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-26T16:51:31Z","cross_cats_sorted":[],"title_canon_sha256":"67c6862987903d9dd87daa57cb2cde451e13372e2efb17fa00ebafaddad5df80","abstract_canon_sha256":"651c6cc6b82aef27711519ef1d2f3f7af3d887e424af0bc816e7d8e3c29759dc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:34.513943Z","signature_b64":"tUmUwXxFZ0DnXpVl5GYX6RliI+tDMZBN1axuf3EC5AB+MKm3wXrgZ0T6huNicQArunXiyO2lmo2x/Os5BkmRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41d8b04765dfdd832be8cbb1601c4b4dbf1811e7b12e68866d2b01732625f1f8","last_reissued_at":"2026-05-18T00:54:34.513223Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:34.513223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"First-Principles Prediction of the Softening of the Silicon Shock Hugoniot Curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Militzer, J. D. Kress, K. P. Driver, L. A. Collins, S. X. Hu","submitted_at":"2016-08-26T16:51:31Z","abstract_excerpt":"Shock compression of silicon (Si) under extremely high pressures (>100 Mbar) was investigated by using two first-principles methods of orbital-free molecular dynamics (OFMD) and path integral Monte Carlo (PIMC). While pressures from the two methods agree very well, PIMC predicts a second compression maximum because of 1s electron ionization that is absent in OFMD calculations since Thomas-Fermi-based theories lack shell structure. The Kohn-Sham density functional theory is used to calculate the equation of state (EOS) of warm dense silicon for low-pressure loadings (P < 100 Mbar). Combining th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07517","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.07517","created_at":"2026-05-18T00:54:34.513333+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.07517v1","created_at":"2026-05-18T00:54:34.513333+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07517","created_at":"2026-05-18T00:54:34.513333+00:00"},{"alias_kind":"pith_short_12","alias_value":"IHMLAR3F37OY","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_16","alias_value":"IHMLAR3F37OYGK7I","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_8","alias_value":"IHMLAR3F","created_at":"2026-05-18T12:30:22.444734+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW","json":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW.json","graph_json":"https://pith.science/api/pith-number/IHMLAR3F37OYGK7IZOYWAHCLJW/graph.json","events_json":"https://pith.science/api/pith-number/IHMLAR3F37OYGK7IZOYWAHCLJW/events.json","paper":"https://pith.science/paper/IHMLAR3F"},"agent_actions":{"view_html":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW","download_json":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW.json","view_paper":"https://pith.science/paper/IHMLAR3F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.07517&json=true","fetch_graph":"https://pith.science/api/pith-number/IHMLAR3F37OYGK7IZOYWAHCLJW/graph.json","fetch_events":"https://pith.science/api/pith-number/IHMLAR3F37OYGK7IZOYWAHCLJW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW/action/storage_attestation","attest_author":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW/action/author_attestation","sign_citation":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW/action/citation_signature","submit_replication":"https://pith.science/pith/IHMLAR3F37OYGK7IZOYWAHCLJW/action/replication_record"}},"created_at":"2026-05-18T00:54:34.513333+00:00","updated_at":"2026-05-18T00:54:34.513333+00:00"}