{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:H2YZQLST2EZB56H7ZNK4UFSQZ4","short_pith_number":"pith:H2YZQLST","canonical_record":{"source":{"id":"2108.11378","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-08-25T12:44:36Z","cross_cats_sorted":[],"title_canon_sha256":"2c5558199780480acaa8e31cd918955d5143d3a57adb1194505263f84de90252","abstract_canon_sha256":"c14e4b040c600b8f5ac7fd66b64014b5edef17f99b4cece296b9460a3d2bb4b9"},"schema_version":"1.0"},"canonical_sha256":"3eb1982e53d1321ef8ffcb55ca1650cf1cde758a5eff9742e1cfd614ca9142f0","source":{"kind":"arxiv","id":"2108.11378","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11378","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11378v1","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11378","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_12","alias_value":"H2YZQLST2EZB","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_16","alias_value":"H2YZQLST2EZB56H7","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_8","alias_value":"H2YZQLST","created_at":"2026-07-05T03:08:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:H2YZQLST2EZB56H7ZNK4UFSQZ4","target":"record","payload":{"canonical_record":{"source":{"id":"2108.11378","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-08-25T12:44:36Z","cross_cats_sorted":[],"title_canon_sha256":"2c5558199780480acaa8e31cd918955d5143d3a57adb1194505263f84de90252","abstract_canon_sha256":"c14e4b040c600b8f5ac7fd66b64014b5edef17f99b4cece296b9460a3d2bb4b9"},"schema_version":"1.0"},"canonical_sha256":"3eb1982e53d1321ef8ffcb55ca1650cf1cde758a5eff9742e1cfd614ca9142f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:08:56.957221Z","signature_b64":"mJcwKmy3RXP0IOpGNARxVPkNbe5CO+kJRSVxb1aWGrxkWFl+Zwr7yn/kf6eWboZtzq/0WPcQ4pxDxJTAUE0zBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3eb1982e53d1321ef8ffcb55ca1650cf1cde758a5eff9742e1cfd614ca9142f0","last_reissued_at":"2026-07-05T03:08:56.956814Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:08:56.956814Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.11378","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":"2026-07-05T03:08:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1l+d+dfdQovWx8ujvP4CQUUy0TynLwgp4/vTIfJK0Bq6mQzpvkM2WPj0YeQyLGjxzdN1IU7+E/MZgwPiEmnyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:21:36.462650Z"},"content_sha256":"015763cb91a42782080025f7afd25f1607c67c2568f10df09745f5b8171eb77b","schema_version":"1.0","event_id":"sha256:015763cb91a42782080025f7afd25f1607c67c2568f10df09745f5b8171eb77b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:H2YZQLST2EZB56H7ZNK4UFSQZ4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Terahertz Polaron Oscillations of Electrons Solvated in Liquid Water","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Ahmed Ghalgaoui, Benjamin P. Fingerhut, Klaus Reimann, Michael Woerner, Thomas Elsaesser","submitted_at":"2021-08-25T12:44:36Z","abstract_excerpt":"The terahertz (THz) response of solvated electrons in liquid water is studied in nonlinear ultrafast pump-probe experiments. Free electrons with concentrations from c_e = 4 to 140 \\times 10-6 moles/liter are generated by high-field THz or near-infrared multiphoton excitation. The time-resolved change of the dielectric function as mapped by broadband THz pulses exhibits pronounced oscillations persisting up to 30 ps. Their frequency increases with electron concentration from 0.2 to 1.5 THz. The oscillatory response is assigned to impulsively excited coherent polarons involving coupled electron "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11378","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/2108.11378/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":"2026-07-05T03:08:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AoT4z+cNAfDDVHgziu1AqL9p8isxZuOT44FDhehUKKXLpRSQPsaH3Cf5rf9FwTPg2LF+1t97zOcK6gLEuWXWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:21:36.463015Z"},"content_sha256":"33e1fff1488d21e111526c1e52828d2c4ff093edcbfdd78673df94f93b84dcb6","schema_version":"1.0","event_id":"sha256:33e1fff1488d21e111526c1e52828d2c4ff093edcbfdd78673df94f93b84dcb6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/bundle.json","state_url":"https://pith.science/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/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":"2026-07-07T12:21:36Z","links":{"resolver":"https://pith.science/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4","bundle":"https://pith.science/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/bundle.json","state":"https://pith.science/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2YZQLST2EZB56H7ZNK4UFSQZ4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:H2YZQLST2EZB56H7ZNK4UFSQZ4","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":"c14e4b040c600b8f5ac7fd66b64014b5edef17f99b4cece296b9460a3d2bb4b9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-08-25T12:44:36Z","title_canon_sha256":"2c5558199780480acaa8e31cd918955d5143d3a57adb1194505263f84de90252"},"schema_version":"1.0","source":{"id":"2108.11378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11378","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11378v1","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11378","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_12","alias_value":"H2YZQLST2EZB","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_16","alias_value":"H2YZQLST2EZB56H7","created_at":"2026-07-05T03:08:56Z"},{"alias_kind":"pith_short_8","alias_value":"H2YZQLST","created_at":"2026-07-05T03:08:56Z"}],"graph_snapshots":[{"event_id":"sha256:33e1fff1488d21e111526c1e52828d2c4ff093edcbfdd78673df94f93b84dcb6","target":"graph","created_at":"2026-07-05T03:08:56Z","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/2108.11378/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The terahertz (THz) response of solvated electrons in liquid water is studied in nonlinear ultrafast pump-probe experiments. Free electrons with concentrations from c_e = 4 to 140 \\times 10-6 moles/liter are generated by high-field THz or near-infrared multiphoton excitation. The time-resolved change of the dielectric function as mapped by broadband THz pulses exhibits pronounced oscillations persisting up to 30 ps. Their frequency increases with electron concentration from 0.2 to 1.5 THz. The oscillatory response is assigned to impulsively excited coherent polarons involving coupled electron ","authors_text":"Ahmed Ghalgaoui, Benjamin P. Fingerhut, Klaus Reimann, Michael Woerner, Thomas Elsaesser","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-08-25T12:44:36Z","title":"Terahertz Polaron Oscillations of Electrons Solvated in Liquid Water"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11378","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":"sha256:015763cb91a42782080025f7afd25f1607c67c2568f10df09745f5b8171eb77b","target":"record","created_at":"2026-07-05T03:08:56Z","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":"c14e4b040c600b8f5ac7fd66b64014b5edef17f99b4cece296b9460a3d2bb4b9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2021-08-25T12:44:36Z","title_canon_sha256":"2c5558199780480acaa8e31cd918955d5143d3a57adb1194505263f84de90252"},"schema_version":"1.0","source":{"id":"2108.11378","kind":"arxiv","version":1}},"canonical_sha256":"3eb1982e53d1321ef8ffcb55ca1650cf1cde758a5eff9742e1cfd614ca9142f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3eb1982e53d1321ef8ffcb55ca1650cf1cde758a5eff9742e1cfd614ca9142f0","first_computed_at":"2026-07-05T03:08:56.956814Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:08:56.956814Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mJcwKmy3RXP0IOpGNARxVPkNbe5CO+kJRSVxb1aWGrxkWFl+Zwr7yn/kf6eWboZtzq/0WPcQ4pxDxJTAUE0zBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:08:56.957221Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.11378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:015763cb91a42782080025f7afd25f1607c67c2568f10df09745f5b8171eb77b","sha256:33e1fff1488d21e111526c1e52828d2c4ff093edcbfdd78673df94f93b84dcb6"],"state_sha256":"639b4420fc123c63a0c5312e9f0a06f09f132be47cd3d28459994914d47f5a33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Po3u7RuH91w7qmCKcE1DNezCZDo/ZyKAt4oAzTlrrNsHKFnODFTjk7itCuN6wptMoKlfqufZ5Ixj7lsmk8aTCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T12:21:36.464859Z","bundle_sha256":"4a9581b1e75d797bf8c3090ef2c158480c3166ea7f709af5c1bf733f10197f91"}}