{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WQKHXZVMFUNVUYAPN7HBMOCNEU","short_pith_number":"pith:WQKHXZVM","canonical_record":{"source":{"id":"1503.07952","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-27T03:13:08Z","cross_cats_sorted":["cond-mat.dis-nn"],"title_canon_sha256":"095ee690be4c81620e3d3f026e6fb708af51824cbc12927c000452c4cd24c096","abstract_canon_sha256":"dffc746cd26c98b32358a6507f57af46c1b01869cf8375313a0231e85482ab9b"},"schema_version":"1.0"},"canonical_sha256":"b4147be6ac2d1b5a600f6fce16384d2511b903b62ac0b47970dcf849c4f43668","source":{"kind":"arxiv","id":"1503.07952","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07952","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07952v1","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07952","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"pith_short_12","alias_value":"WQKHXZVMFUNV","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQKHXZVMFUNVUYAP","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQKHXZVM","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WQKHXZVMFUNVUYAPN7HBMOCNEU","target":"record","payload":{"canonical_record":{"source":{"id":"1503.07952","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-27T03:13:08Z","cross_cats_sorted":["cond-mat.dis-nn"],"title_canon_sha256":"095ee690be4c81620e3d3f026e6fb708af51824cbc12927c000452c4cd24c096","abstract_canon_sha256":"dffc746cd26c98b32358a6507f57af46c1b01869cf8375313a0231e85482ab9b"},"schema_version":"1.0"},"canonical_sha256":"b4147be6ac2d1b5a600f6fce16384d2511b903b62ac0b47970dcf849c4f43668","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:31:40.001245Z","signature_b64":"wgfOHQqa0XryI/Mt/f/koVy+0VwVZiaKWXsrlfOShjLhsMcDWzmQawfwYEtsEH1akDyxwNEVoz1uT82HZ+7EAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4147be6ac2d1b5a600f6fce16384d2511b903b62ac0b47970dcf849c4f43668","last_reissued_at":"2026-05-18T01:31:40.000726Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:31:40.000726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.07952","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":"2026-05-18T01:31:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"85Tv25CzIttb35lzLceKIUSo+VX0BscCJE35P/XknE99CP8YN4xS/3US/j+8hyf6rVLB1kfjo+iCAnoX/B3lDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:19:28.942689Z"},"content_sha256":"f5617933495b78db0caad47f5928469f7181b3f209edfb25502b762ebdd38214","schema_version":"1.0","event_id":"sha256:f5617933495b78db0caad47f5928469f7181b3f209edfb25502b762ebdd38214"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WQKHXZVMFUNVUYAPN7HBMOCNEU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hyperfine-induced spin relaxation of a diffusively moving carrier in low dimensions: implications for spin transport in organic semiconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.dis-nn"],"primary_cat":"cond-mat.mes-hall","authors_text":"V. V. Dobrovitski, V. V. Mkhitaryan","submitted_at":"2015-03-27T03:13:08Z","abstract_excerpt":"The hyperfine coupling between the spin of a charge carrier and the nuclear spin bath is a predominant channel for the carrier spin relaxation in many organic semiconductors. We theoretically investigate the hyperfine-induced spin relaxation of a carrier performing a random walk on a d-dimensional regular lattice, in a transport regime typical for organic semiconductors. We show that in d=1 and d=2 the time dependence of the space-integrated spin polarization, P(t), is dominated by a superexponential decay, crossing over to a stretched exponential tail at long times. The faster decay is attrib"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07952","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:31:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lFvdMEDQUHflNSsRRqErOEzw7YLMaKMDuRWA5Vp7+U1r4InKcW1CRevGFvqUF3t7URg7GpICaiwo8Hf39oO5DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:19:28.943348Z"},"content_sha256":"0faa8f4f0be9e71bb8db67bce257a587c5f2bad18d03b8929085c3e04c28e209","schema_version":"1.0","event_id":"sha256:0faa8f4f0be9e71bb8db67bce257a587c5f2bad18d03b8929085c3e04c28e209"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/bundle.json","state_url":"https://pith.science/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/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":"2026-05-31T04:19:28Z","links":{"resolver":"https://pith.science/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU","bundle":"https://pith.science/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/bundle.json","state":"https://pith.science/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WQKHXZVMFUNVUYAPN7HBMOCNEU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WQKHXZVMFUNVUYAPN7HBMOCNEU","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":"dffc746cd26c98b32358a6507f57af46c1b01869cf8375313a0231e85482ab9b","cross_cats_sorted":["cond-mat.dis-nn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-27T03:13:08Z","title_canon_sha256":"095ee690be4c81620e3d3f026e6fb708af51824cbc12927c000452c4cd24c096"},"schema_version":"1.0","source":{"id":"1503.07952","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07952","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07952v1","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07952","created_at":"2026-05-18T01:31:40Z"},{"alias_kind":"pith_short_12","alias_value":"WQKHXZVMFUNV","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQKHXZVMFUNVUYAP","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQKHXZVM","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:0faa8f4f0be9e71bb8db67bce257a587c5f2bad18d03b8929085c3e04c28e209","target":"graph","created_at":"2026-05-18T01:31:40Z","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":"The hyperfine coupling between the spin of a charge carrier and the nuclear spin bath is a predominant channel for the carrier spin relaxation in many organic semiconductors. We theoretically investigate the hyperfine-induced spin relaxation of a carrier performing a random walk on a d-dimensional regular lattice, in a transport regime typical for organic semiconductors. We show that in d=1 and d=2 the time dependence of the space-integrated spin polarization, P(t), is dominated by a superexponential decay, crossing over to a stretched exponential tail at long times. The faster decay is attrib","authors_text":"V. V. Dobrovitski, V. V. Mkhitaryan","cross_cats":["cond-mat.dis-nn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-27T03:13:08Z","title":"Hyperfine-induced spin relaxation of a diffusively moving carrier in low dimensions: implications for spin transport in organic semiconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07952","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:f5617933495b78db0caad47f5928469f7181b3f209edfb25502b762ebdd38214","target":"record","created_at":"2026-05-18T01:31:40Z","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":"dffc746cd26c98b32358a6507f57af46c1b01869cf8375313a0231e85482ab9b","cross_cats_sorted":["cond-mat.dis-nn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-03-27T03:13:08Z","title_canon_sha256":"095ee690be4c81620e3d3f026e6fb708af51824cbc12927c000452c4cd24c096"},"schema_version":"1.0","source":{"id":"1503.07952","kind":"arxiv","version":1}},"canonical_sha256":"b4147be6ac2d1b5a600f6fce16384d2511b903b62ac0b47970dcf849c4f43668","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4147be6ac2d1b5a600f6fce16384d2511b903b62ac0b47970dcf849c4f43668","first_computed_at":"2026-05-18T01:31:40.000726Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:31:40.000726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wgfOHQqa0XryI/Mt/f/koVy+0VwVZiaKWXsrlfOShjLhsMcDWzmQawfwYEtsEH1akDyxwNEVoz1uT82HZ+7EAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:31:40.001245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07952","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5617933495b78db0caad47f5928469f7181b3f209edfb25502b762ebdd38214","sha256:0faa8f4f0be9e71bb8db67bce257a587c5f2bad18d03b8929085c3e04c28e209"],"state_sha256":"12a1d9842c073d90a47be1d6267c14c145a048542a53359a0fe08aa0f8d243ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c7QtCTE5UTfIlJglh09kEiYk6xgxCwZqN5r1HgrRHN9d2LHmjz1HYs+YK0Jmkoz9q+wg+ml70xUOKiptC/joAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T04:19:28.947694Z","bundle_sha256":"8f8de2d5e6ff19f5472c1eb4aca90c6266267a0ee8e0a824fc95be2506558a98"}}