{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:VQHQHV2KX5EMVQXCFURR27YWPA","short_pith_number":"pith:VQHQHV2K","canonical_record":{"source":{"id":"1401.0614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-01-03T09:38:14Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"9039360686be3ad3d1fef32d6e5f8192e177dd3a147c31e96feef20193927f53","abstract_canon_sha256":"84bc262d381df75ce5609cc4fb4d1668b094dfa26d6810f2dbdd4eee1d8541cf"},"schema_version":"1.0"},"canonical_sha256":"ac0f03d74abf48cac2e22d231d7f1678140a0f76908dde8df017ac670c72e97a","source":{"kind":"arxiv","id":"1401.0614","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.0614","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"arxiv_version","alias_value":"1401.0614v2","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0614","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"pith_short_12","alias_value":"VQHQHV2KX5EM","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VQHQHV2KX5EMVQXC","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VQHQHV2K","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:VQHQHV2KX5EMVQXCFURR27YWPA","target":"record","payload":{"canonical_record":{"source":{"id":"1401.0614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-01-03T09:38:14Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"9039360686be3ad3d1fef32d6e5f8192e177dd3a147c31e96feef20193927f53","abstract_canon_sha256":"84bc262d381df75ce5609cc4fb4d1668b094dfa26d6810f2dbdd4eee1d8541cf"},"schema_version":"1.0"},"canonical_sha256":"ac0f03d74abf48cac2e22d231d7f1678140a0f76908dde8df017ac670c72e97a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:34.271595Z","signature_b64":"CYXBuqvSGZPbfjMZyGOsOPGNOPBHyYjTYcl6/ctcVLtZ/1aHqtMYe6zOYj8Y++JOSBw+LKxdfRCC2KlbFDktDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ac0f03d74abf48cac2e22d231d7f1678140a0f76908dde8df017ac670c72e97a","last_reissued_at":"2026-05-18T01:45:34.271131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:34.271131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.0614","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":"2026-05-18T01:45:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qkfB/E4sNyDTOY/0oyqbL8cLSIG1N+vFwzS2kdgzTCqLpXY1X0dLYRHuTOnCBGB7qqHTalbTKRKXv/JzMKLqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:54:13.916648Z"},"content_sha256":"e5be479b5d31e428fbeace03965cf5986c88e3fffcf63f13ca1ed349395d0241","schema_version":"1.0","event_id":"sha256:e5be479b5d31e428fbeace03965cf5986c88e3fffcf63f13ca1ed349395d0241"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:VQHQHV2KX5EMVQXCFURR27YWPA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Energy Density Functionals From the Strong-Coupling Limit Applied to the Anions of the He Isoelectronic Series","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"physics.chem-ph","authors_text":"Andr\\'e Mirtschink, C. J. Umrigar, John D. Morgan III, Paola Gori-Giorgi","submitted_at":"2014-01-03T09:38:14Z","abstract_excerpt":"Anions and radicals are important for many applications including environmental chemistry, semiconductors, and charge transfer, but are poorly described by the available approximate energy density functionals. Here we test an approximate exchange-correlation functional based on the exact strong-coupling limit of the Hohenberg-Kohn functional on the prototypical case of the He isoelectronic series with varying nuclear charge $Z<2$, which includes weakly bound negative ions and a quantum phase transition at a critical value of $Z$, representing a big challenge for density functional theory. We u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0614","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":"2026-05-18T01:45:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O5cpurkl7yYHlEFNxvlY5StKIP3wD4ZwLs6SVXm6haIJU95M2E2eReSjE73uEXI8/lQRcwtAVj2HQ2YgykfqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:54:13.917361Z"},"content_sha256":"2febf00c28251d37c227caa4cb043d735d1cc1eb978e3fbee8067c54762d38ad","schema_version":"1.0","event_id":"sha256:2febf00c28251d37c227caa4cb043d735d1cc1eb978e3fbee8067c54762d38ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VQHQHV2KX5EMVQXCFURR27YWPA/bundle.json","state_url":"https://pith.science/pith/VQHQHV2KX5EMVQXCFURR27YWPA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VQHQHV2KX5EMVQXCFURR27YWPA/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":"2026-05-25T22:54:13Z","links":{"resolver":"https://pith.science/pith/VQHQHV2KX5EMVQXCFURR27YWPA","bundle":"https://pith.science/pith/VQHQHV2KX5EMVQXCFURR27YWPA/bundle.json","state":"https://pith.science/pith/VQHQHV2KX5EMVQXCFURR27YWPA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VQHQHV2KX5EMVQXCFURR27YWPA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:VQHQHV2KX5EMVQXCFURR27YWPA","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":"84bc262d381df75ce5609cc4fb4d1668b094dfa26d6810f2dbdd4eee1d8541cf","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-01-03T09:38:14Z","title_canon_sha256":"9039360686be3ad3d1fef32d6e5f8192e177dd3a147c31e96feef20193927f53"},"schema_version":"1.0","source":{"id":"1401.0614","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.0614","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"arxiv_version","alias_value":"1401.0614v2","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0614","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"pith_short_12","alias_value":"VQHQHV2KX5EM","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VQHQHV2KX5EMVQXC","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VQHQHV2K","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:2febf00c28251d37c227caa4cb043d735d1cc1eb978e3fbee8067c54762d38ad","target":"graph","created_at":"2026-05-18T01:45:34Z","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":"Anions and radicals are important for many applications including environmental chemistry, semiconductors, and charge transfer, but are poorly described by the available approximate energy density functionals. Here we test an approximate exchange-correlation functional based on the exact strong-coupling limit of the Hohenberg-Kohn functional on the prototypical case of the He isoelectronic series with varying nuclear charge $Z<2$, which includes weakly bound negative ions and a quantum phase transition at a critical value of $Z$, representing a big challenge for density functional theory. We u","authors_text":"Andr\\'e Mirtschink, C. J. Umrigar, John D. Morgan III, Paola Gori-Giorgi","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-01-03T09:38:14Z","title":"Energy Density Functionals From the Strong-Coupling Limit Applied to the Anions of the He Isoelectronic Series"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0614","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:e5be479b5d31e428fbeace03965cf5986c88e3fffcf63f13ca1ed349395d0241","target":"record","created_at":"2026-05-18T01:45:34Z","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":"84bc262d381df75ce5609cc4fb4d1668b094dfa26d6810f2dbdd4eee1d8541cf","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-01-03T09:38:14Z","title_canon_sha256":"9039360686be3ad3d1fef32d6e5f8192e177dd3a147c31e96feef20193927f53"},"schema_version":"1.0","source":{"id":"1401.0614","kind":"arxiv","version":2}},"canonical_sha256":"ac0f03d74abf48cac2e22d231d7f1678140a0f76908dde8df017ac670c72e97a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac0f03d74abf48cac2e22d231d7f1678140a0f76908dde8df017ac670c72e97a","first_computed_at":"2026-05-18T01:45:34.271131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:34.271131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CYXBuqvSGZPbfjMZyGOsOPGNOPBHyYjTYcl6/ctcVLtZ/1aHqtMYe6zOYj8Y++JOSBw+LKxdfRCC2KlbFDktDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:34.271595Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.0614","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5be479b5d31e428fbeace03965cf5986c88e3fffcf63f13ca1ed349395d0241","sha256:2febf00c28251d37c227caa4cb043d735d1cc1eb978e3fbee8067c54762d38ad"],"state_sha256":"c67ccff178200da2093d334222ad58e9556cdb6137397c632592d488552a39e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S7rUE3IK/kFEX3dU5udJQuOsxoROQiwEP2fSntNhZyGBzJ2zQCUQ7ijnH81jVuP4y8F7TY0ivmgOzYNIhgDoDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:54:13.921131Z","bundle_sha256":"65fb084d65a011383fb91986d4a8063e79e0ce17111de6614e2cefb678053386"}}