{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:RWHMC2ORUV62G7BSBQXM6F3ZYJ","short_pith_number":"pith:RWHMC2OR","canonical_record":{"source":{"id":"1503.01714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-03-05T18:01:26Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ec6de352c5b55e193acd3fa93ae5d15a2bcdae9f8cf8bd92155e00820cd19e3e","abstract_canon_sha256":"22eda223404f183f39977dce385f816d9fd8a695f02fbdb6b7c90731991d3cd0"},"schema_version":"1.0"},"canonical_sha256":"8d8ec169d1a57da37c320c2ecf1779c26e8deda0010c0181caadeddb030a1a73","source":{"kind":"arxiv","id":"1503.01714","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01714","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01714v2","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01714","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"pith_short_12","alias_value":"RWHMC2ORUV62","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RWHMC2ORUV62G7BS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RWHMC2OR","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:RWHMC2ORUV62G7BSBQXM6F3ZYJ","target":"record","payload":{"canonical_record":{"source":{"id":"1503.01714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-03-05T18:01:26Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ec6de352c5b55e193acd3fa93ae5d15a2bcdae9f8cf8bd92155e00820cd19e3e","abstract_canon_sha256":"22eda223404f183f39977dce385f816d9fd8a695f02fbdb6b7c90731991d3cd0"},"schema_version":"1.0"},"canonical_sha256":"8d8ec169d1a57da37c320c2ecf1779c26e8deda0010c0181caadeddb030a1a73","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:02.939874Z","signature_b64":"50dh/kf6G8VM0YGTvtTaFc6KdBuvd2CzPcyr2nnWfkoWqE/xsmLRaxXpdRRXjVqwnNJsfXJBWFA/8Oz3u+jXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d8ec169d1a57da37c320c2ecf1779c26e8deda0010c0181caadeddb030a1a73","last_reissued_at":"2026-05-18T01:29:02.939332Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:02.939332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.01714","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":"2026-05-18T01:29:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WjOKAQTwHvUXt38/aPRIi81J7yZTXqcXzEoAS8/j5lscpWLmPSeF5UeV0ehdYaIMiCTpmOx0a3OJeobZz+VZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T17:31:38.303468Z"},"content_sha256":"7b8c483d97020541c4549e0a5606f7b91fd1a97828758bef44a2e16cd294bb15","schema_version":"1.0","event_id":"sha256:7b8c483d97020541c4549e0a5606f7b91fd1a97828758bef44a2e16cd294bb15"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:RWHMC2ORUV62G7BSBQXM6F3ZYJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long-range correction for tight-binding TD-DFT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.chem-ph","authors_text":"Alexander Humeniuk, Roland Mitric","submitted_at":"2015-03-05T18:01:26Z","abstract_excerpt":"We present two improvements to the tight-binding approximation of time-dependent density functional theory (TD-DFTB): Firstly, we add an exact Hartree-Fock exchange term, which is switched on at large distances, to the ground state Hamiltonian and similarly to the coupling matrix that enters the linear response equations for the calculation excited electronic states. We show that the excitation energies of charge transfer states are improved relative to the standard approach without the long-range correction by testing the method on a set of molecules from the database in J. Chem. Phys. (2008)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01714","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":"2026-05-18T01:29:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VbYM67e0Io63dkfgTBrVYz1FDPU833h2mvpkveRSpoPJXvhqiJPRFwJXS1a2HP+YV8DQZyw7x9A0stwvLJuMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T17:31:38.303796Z"},"content_sha256":"76233ea5c566240fb603cd437707b9e7ac23fa7ff1e84e61f08b0ec72643aa2d","schema_version":"1.0","event_id":"sha256:76233ea5c566240fb603cd437707b9e7ac23fa7ff1e84e61f08b0ec72643aa2d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/bundle.json","state_url":"https://pith.science/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/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":"2026-06-29T17:31:38Z","links":{"resolver":"https://pith.science/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ","bundle":"https://pith.science/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/bundle.json","state":"https://pith.science/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RWHMC2ORUV62G7BSBQXM6F3ZYJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RWHMC2ORUV62G7BSBQXM6F3ZYJ","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":"22eda223404f183f39977dce385f816d9fd8a695f02fbdb6b7c90731991d3cd0","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-03-05T18:01:26Z","title_canon_sha256":"ec6de352c5b55e193acd3fa93ae5d15a2bcdae9f8cf8bd92155e00820cd19e3e"},"schema_version":"1.0","source":{"id":"1503.01714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01714","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01714v2","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01714","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"pith_short_12","alias_value":"RWHMC2ORUV62","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RWHMC2ORUV62G7BS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RWHMC2OR","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:76233ea5c566240fb603cd437707b9e7ac23fa7ff1e84e61f08b0ec72643aa2d","target":"graph","created_at":"2026-05-18T01:29:02Z","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 present two improvements to the tight-binding approximation of time-dependent density functional theory (TD-DFTB): Firstly, we add an exact Hartree-Fock exchange term, which is switched on at large distances, to the ground state Hamiltonian and similarly to the coupling matrix that enters the linear response equations for the calculation excited electronic states. We show that the excitation energies of charge transfer states are improved relative to the standard approach without the long-range correction by testing the method on a set of molecules from the database in J. Chem. Phys. (2008)","authors_text":"Alexander Humeniuk, Roland Mitric","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-03-05T18:01:26Z","title":"Long-range correction for tight-binding TD-DFT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01714","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":"sha256:7b8c483d97020541c4549e0a5606f7b91fd1a97828758bef44a2e16cd294bb15","target":"record","created_at":"2026-05-18T01:29:02Z","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":"22eda223404f183f39977dce385f816d9fd8a695f02fbdb6b7c90731991d3cd0","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-03-05T18:01:26Z","title_canon_sha256":"ec6de352c5b55e193acd3fa93ae5d15a2bcdae9f8cf8bd92155e00820cd19e3e"},"schema_version":"1.0","source":{"id":"1503.01714","kind":"arxiv","version":2}},"canonical_sha256":"8d8ec169d1a57da37c320c2ecf1779c26e8deda0010c0181caadeddb030a1a73","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d8ec169d1a57da37c320c2ecf1779c26e8deda0010c0181caadeddb030a1a73","first_computed_at":"2026-05-18T01:29:02.939332Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:02.939332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"50dh/kf6G8VM0YGTvtTaFc6KdBuvd2CzPcyr2nnWfkoWqE/xsmLRaxXpdRRXjVqwnNJsfXJBWFA/8Oz3u+jXDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:02.939874Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.01714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b8c483d97020541c4549e0a5606f7b91fd1a97828758bef44a2e16cd294bb15","sha256:76233ea5c566240fb603cd437707b9e7ac23fa7ff1e84e61f08b0ec72643aa2d"],"state_sha256":"cf523443c7bdc76f37461467a95d716d9871108a60a5b7719c2589b8bc69d9e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7ykhQHM8xGgLuPQBH8NryJQDMqJiphi9mBE2T0ID5Rn1qoVqjg71jVu8Whtoc53GeawUJM0GDlcJ3lHuC1CcAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T17:31:38.305578Z","bundle_sha256":"d8281b887f4913fbb3b6b32a42e8033bb264ea1f32b20f3a3fa6887cbb4ce1c2"}}