{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:4KDNC4R7SCBGW64BQJJOUGBUXI","short_pith_number":"pith:4KDNC4R7","canonical_record":{"source":{"id":"2011.00532","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-11-01T15:22:49Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"25173a6a0e9de4b5d243f54638865af6720331418d76c13b469bea9986b3b397","abstract_canon_sha256":"711d8c4bccc31cfb4e99ec3bac6d8e58187f6f73f7ee516a8de29086397aa00c"},"schema_version":"1.0"},"canonical_sha256":"e286d1723f90826b7b818252ea1834ba04d60dace9ec6c3080af66e1cb8d8a94","source":{"kind":"arxiv","id":"2011.00532","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.00532","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"arxiv_version","alias_value":"2011.00532v1","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.00532","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_12","alias_value":"4KDNC4R7SCBG","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_16","alias_value":"4KDNC4R7SCBGW64B","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_8","alias_value":"4KDNC4R7","created_at":"2026-07-05T01:48:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:4KDNC4R7SCBGW64BQJJOUGBUXI","target":"record","payload":{"canonical_record":{"source":{"id":"2011.00532","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-11-01T15:22:49Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"25173a6a0e9de4b5d243f54638865af6720331418d76c13b469bea9986b3b397","abstract_canon_sha256":"711d8c4bccc31cfb4e99ec3bac6d8e58187f6f73f7ee516a8de29086397aa00c"},"schema_version":"1.0"},"canonical_sha256":"e286d1723f90826b7b818252ea1834ba04d60dace9ec6c3080af66e1cb8d8a94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:48:17.010165Z","signature_b64":"XWxdYMTb1Rb3rF+uMAAzSTwXnIih0rNNBABRdC1E/qf2qx6iWxFVvzdq9rFqKfuhaE6reR0u+vkZq5GQjgJdAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e286d1723f90826b7b818252ea1834ba04d60dace9ec6c3080af66e1cb8d8a94","last_reissued_at":"2026-07-05T01:48:17.009829Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:48:17.009829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.00532","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":"2026-07-05T01:48:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nBUTjHMZ3w3hnSHNqRQigVfQHdzOgMddoEU0zkCBpXVA1WuWWVzV9NN7CZYFdDnzlclZvuhQPPXPn2FrUtS7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:36:36.773044Z"},"content_sha256":"14f0be35661e17f7e56a01a7688dcff74112031627fbd795455681628e536636","schema_version":"1.0","event_id":"sha256:14f0be35661e17f7e56a01a7688dcff74112031627fbd795455681628e536636"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:4KDNC4R7SCBGW64BQJJOUGBUXI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Designing intramolecular singlet-fission materials using indeno[1,2-b]fluorene dimers: A DMRG and TDDFT study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Mousumi Das, Sumit Naskar","submitted_at":"2020-11-01T15:22:49Z","abstract_excerpt":"Low-lying excited states for indeno[1,2-b]fluorene homo dimers with or without benzene spacers are calculated using the Density Matrix Renormalization group (DMRG) approach within Pariser-Parr-Pople (PPP) model Hamiltonian. DMRG calculations suggest that all the dimers studied here satisfy the essential energy conditions for SF. SF is a multiexciton generation process. As it is spin allowed, the process is very fast. By generating multiple exciton at a time SF underestimate SQ limit to enhance photo-conversion efficiency of single junction solar cells. Frontier orbital calculation through Dens"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.00532","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/2011.00532/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":"2026-07-05T01:48:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7oR3nhLALO8ynj8mZ/JkcgNN3ETWzPYqG2L0sHW39iJpQNmTaCzExhxZzZ+lm4M4J/6d9hLY12UQFyS010JDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:36:36.773566Z"},"content_sha256":"a17ad527e4e0c18ebeb360e530b395767c6b4e99230b6b7957002d03d4f770ca","schema_version":"1.0","event_id":"sha256:a17ad527e4e0c18ebeb360e530b395767c6b4e99230b6b7957002d03d4f770ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/bundle.json","state_url":"https://pith.science/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/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":"2026-08-14T14:36:36Z","links":{"resolver":"https://pith.science/pith/4KDNC4R7SCBGW64BQJJOUGBUXI","bundle":"https://pith.science/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/bundle.json","state":"https://pith.science/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4KDNC4R7SCBGW64BQJJOUGBUXI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:4KDNC4R7SCBGW64BQJJOUGBUXI","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":"711d8c4bccc31cfb4e99ec3bac6d8e58187f6f73f7ee516a8de29086397aa00c","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-11-01T15:22:49Z","title_canon_sha256":"25173a6a0e9de4b5d243f54638865af6720331418d76c13b469bea9986b3b397"},"schema_version":"1.0","source":{"id":"2011.00532","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.00532","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"arxiv_version","alias_value":"2011.00532v1","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.00532","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_12","alias_value":"4KDNC4R7SCBG","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_16","alias_value":"4KDNC4R7SCBGW64B","created_at":"2026-07-05T01:48:17Z"},{"alias_kind":"pith_short_8","alias_value":"4KDNC4R7","created_at":"2026-07-05T01:48:17Z"}],"graph_snapshots":[{"event_id":"sha256:a17ad527e4e0c18ebeb360e530b395767c6b4e99230b6b7957002d03d4f770ca","target":"graph","created_at":"2026-07-05T01:48:17Z","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/2011.00532/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Low-lying excited states for indeno[1,2-b]fluorene homo dimers with or without benzene spacers are calculated using the Density Matrix Renormalization group (DMRG) approach within Pariser-Parr-Pople (PPP) model Hamiltonian. DMRG calculations suggest that all the dimers studied here satisfy the essential energy conditions for SF. SF is a multiexciton generation process. As it is spin allowed, the process is very fast. By generating multiple exciton at a time SF underestimate SQ limit to enhance photo-conversion efficiency of single junction solar cells. Frontier orbital calculation through Dens","authors_text":"Mousumi Das, Sumit Naskar","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-11-01T15:22:49Z","title":"Designing intramolecular singlet-fission materials using indeno[1,2-b]fluorene dimers: A DMRG and TDDFT study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.00532","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":"sha256:14f0be35661e17f7e56a01a7688dcff74112031627fbd795455681628e536636","target":"record","created_at":"2026-07-05T01:48:17Z","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":"711d8c4bccc31cfb4e99ec3bac6d8e58187f6f73f7ee516a8de29086397aa00c","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-11-01T15:22:49Z","title_canon_sha256":"25173a6a0e9de4b5d243f54638865af6720331418d76c13b469bea9986b3b397"},"schema_version":"1.0","source":{"id":"2011.00532","kind":"arxiv","version":1}},"canonical_sha256":"e286d1723f90826b7b818252ea1834ba04d60dace9ec6c3080af66e1cb8d8a94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e286d1723f90826b7b818252ea1834ba04d60dace9ec6c3080af66e1cb8d8a94","first_computed_at":"2026-07-05T01:48:17.009829Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:48:17.009829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XWxdYMTb1Rb3rF+uMAAzSTwXnIih0rNNBABRdC1E/qf2qx6iWxFVvzdq9rFqKfuhaE6reR0u+vkZq5GQjgJdAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:48:17.010165Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.00532","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14f0be35661e17f7e56a01a7688dcff74112031627fbd795455681628e536636","sha256:a17ad527e4e0c18ebeb360e530b395767c6b4e99230b6b7957002d03d4f770ca"],"state_sha256":"a9e5bfacf18821a83064149518aedb491a8effd8986d5ca2c4cc39bb2dbe832b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PI6QMGKJK1C2O/86H9gzYoBiu5ZobTOYBxu60vFr2l4Xyy2js3hl7ndU9owrgc26NYRJYwZjmsRv892RORslDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:36:36.778993Z","bundle_sha256":"256c82e90217b105839853b58a831765a757f3b907ca929183d62e596f68c94d"}}