{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TJTSYUL6OOXJXL67V5DRYNVU52","short_pith_number":"pith:TJTSYUL6","canonical_record":{"source":{"id":"2102.13579","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-02-26T16:46:24Z","cross_cats_sorted":[],"title_canon_sha256":"c67a07f3f9b71a42ba12086757c15c90530c43734b4c29b1ce748a4cda3a1679","abstract_canon_sha256":"8f6b1849341f13c160469403d3c9c025248cef11550f6264a020fd55f12ff635"},"schema_version":"1.0"},"canonical_sha256":"9a672c517e73ae9bafdfaf471c36b4eea9e877ad25f8148d4c6232aabf4a0363","source":{"kind":"arxiv","id":"2102.13579","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.13579","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"arxiv_version","alias_value":"2102.13579v1","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.13579","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_12","alias_value":"TJTSYUL6OOXJ","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_16","alias_value":"TJTSYUL6OOXJXL67","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_8","alias_value":"TJTSYUL6","created_at":"2026-07-05T02:18:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TJTSYUL6OOXJXL67V5DRYNVU52","target":"record","payload":{"canonical_record":{"source":{"id":"2102.13579","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-02-26T16:46:24Z","cross_cats_sorted":[],"title_canon_sha256":"c67a07f3f9b71a42ba12086757c15c90530c43734b4c29b1ce748a4cda3a1679","abstract_canon_sha256":"8f6b1849341f13c160469403d3c9c025248cef11550f6264a020fd55f12ff635"},"schema_version":"1.0"},"canonical_sha256":"9a672c517e73ae9bafdfaf471c36b4eea9e877ad25f8148d4c6232aabf4a0363","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:18:46.194991Z","signature_b64":"DxOZkJLUg3z6InPfyE13gEE4ikV0LYYxkT6NweciwldnnuxsaLj+rVSAxBb4epp7pU1pZqWzKInLPdmL2+TkBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a672c517e73ae9bafdfaf471c36b4eea9e877ad25f8148d4c6232aabf4a0363","last_reissued_at":"2026-07-05T02:18:46.194629Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:18:46.194629Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.13579","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:18:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HT2UEW6JryO9vYBAFgxzljdGTt+to+1+eB0+lOaKBnjGWU2ekbrDhP5tFP2OqK9dXCFAIUwLqGB5HwlOYtZaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:55:05.280681Z"},"content_sha256":"a54a947ced4736a07936c1f5248e5b5151056d984de058f62bc864dd1fe3daad","schema_version":"1.0","event_id":"sha256:a54a947ced4736a07936c1f5248e5b5151056d984de058f62bc864dd1fe3daad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TJTSYUL6OOXJXL67V5DRYNVU52","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excitation energies through Becke's exciton model within a Cartesian-grid KS DFT","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Abhisek Ghosal, Amlan K. Roy, Kishalay Mahato, Tarun Gupta","submitted_at":"2021-02-26T16:46:24Z","abstract_excerpt":"Photon-induced electronic excitations are ubiquitously observed in organic chromophore. In this context, we present a simple, alternative time-independent DFT procedure, for computation of single-particle excitation energies, in particular, the lower bound excited singlet states, which are of primary interest in photochemistry. This takes inspiration from recently developed Becke's exciton model, where a key step constitutes the accurate evaluation of correlated singlet-triplet splitting energy. It introduces a non-empirical model, both from \"adiabatic connection theorem\" and \"virial theorem\" "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.13579","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2102.13579/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":"2026-07-05T02:18:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WezJ52F+MWj7Cx5KBI7KMVUSrE0J1IgSxi2ShmykzrefCgeWHdcdOkzkhu+HVEl3UHb5VwQ2xz0HdwbGy/ZiDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:55:05.281372Z"},"content_sha256":"7732a907954c281dc24ccd00591686f5b645886ceb4a1b33b3759340e8bfecb5","schema_version":"1.0","event_id":"sha256:7732a907954c281dc24ccd00591686f5b645886ceb4a1b33b3759340e8bfecb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TJTSYUL6OOXJXL67V5DRYNVU52/bundle.json","state_url":"https://pith.science/pith/TJTSYUL6OOXJXL67V5DRYNVU52/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TJTSYUL6OOXJXL67V5DRYNVU52/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":"2026-08-04T14:55:05Z","links":{"resolver":"https://pith.science/pith/TJTSYUL6OOXJXL67V5DRYNVU52","bundle":"https://pith.science/pith/TJTSYUL6OOXJXL67V5DRYNVU52/bundle.json","state":"https://pith.science/pith/TJTSYUL6OOXJXL67V5DRYNVU52/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TJTSYUL6OOXJXL67V5DRYNVU52/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TJTSYUL6OOXJXL67V5DRYNVU52","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":"8f6b1849341f13c160469403d3c9c025248cef11550f6264a020fd55f12ff635","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-02-26T16:46:24Z","title_canon_sha256":"c67a07f3f9b71a42ba12086757c15c90530c43734b4c29b1ce748a4cda3a1679"},"schema_version":"1.0","source":{"id":"2102.13579","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.13579","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"arxiv_version","alias_value":"2102.13579v1","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.13579","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_12","alias_value":"TJTSYUL6OOXJ","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_16","alias_value":"TJTSYUL6OOXJXL67","created_at":"2026-07-05T02:18:46Z"},{"alias_kind":"pith_short_8","alias_value":"TJTSYUL6","created_at":"2026-07-05T02:18:46Z"}],"graph_snapshots":[{"event_id":"sha256:7732a907954c281dc24ccd00591686f5b645886ceb4a1b33b3759340e8bfecb5","target":"graph","created_at":"2026-07-05T02:18:46Z","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/2102.13579/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Photon-induced electronic excitations are ubiquitously observed in organic chromophore. In this context, we present a simple, alternative time-independent DFT procedure, for computation of single-particle excitation energies, in particular, the lower bound excited singlet states, which are of primary interest in photochemistry. This takes inspiration from recently developed Becke's exciton model, where a key step constitutes the accurate evaluation of correlated singlet-triplet splitting energy. It introduces a non-empirical model, both from \"adiabatic connection theorem\" and \"virial theorem\" ","authors_text":"Abhisek Ghosal, Amlan K. Roy, Kishalay Mahato, Tarun Gupta","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-02-26T16:46:24Z","title":"Excitation energies through Becke's exciton model within a Cartesian-grid KS DFT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.13579","kind":"arxiv","version":1},"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:a54a947ced4736a07936c1f5248e5b5151056d984de058f62bc864dd1fe3daad","target":"record","created_at":"2026-07-05T02:18:46Z","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":"8f6b1849341f13c160469403d3c9c025248cef11550f6264a020fd55f12ff635","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-02-26T16:46:24Z","title_canon_sha256":"c67a07f3f9b71a42ba12086757c15c90530c43734b4c29b1ce748a4cda3a1679"},"schema_version":"1.0","source":{"id":"2102.13579","kind":"arxiv","version":1}},"canonical_sha256":"9a672c517e73ae9bafdfaf471c36b4eea9e877ad25f8148d4c6232aabf4a0363","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a672c517e73ae9bafdfaf471c36b4eea9e877ad25f8148d4c6232aabf4a0363","first_computed_at":"2026-07-05T02:18:46.194629Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:18:46.194629Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DxOZkJLUg3z6InPfyE13gEE4ikV0LYYxkT6NweciwldnnuxsaLj+rVSAxBb4epp7pU1pZqWzKInLPdmL2+TkBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:18:46.194991Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.13579","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a54a947ced4736a07936c1f5248e5b5151056d984de058f62bc864dd1fe3daad","sha256:7732a907954c281dc24ccd00591686f5b645886ceb4a1b33b3759340e8bfecb5"],"state_sha256":"e17e1cb8815f7ab14443f447875e9463a2c9e198cdea802e716e21bd733915d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OCk2rMdEOtYvrFBaepx9uGOK4sgw5vIwtTuUxr7vTFCboPLRzt3EIlXIAi79UnKcmDdrhYy4JMA/zdbSk/0PCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T14:55:05.285405Z","bundle_sha256":"abe95f4ee38cae2e6582ab920e7f056e22fbee82401aa3ee24dfcd4302b37ab4"}}