{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NSTDZ3HWE2TJVXCAQEYAXZ76FU","short_pith_number":"pith:NSTDZ3HW","canonical_record":{"source":{"id":"1902.04120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-11T20:00:46Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"2149c9c228474a8015bb1a8fab5dfe247f633bfb87b07d0735f9edd32203a467","abstract_canon_sha256":"d93ea7f239178f0470c2aa338600add81e27419d684a706b615300bf8bb3b0de"},"schema_version":"1.0"},"canonical_sha256":"6ca63cecf626a69adc4081300be7fe2d083a639ba7d001d699fcbb2ebb7dfef0","source":{"kind":"arxiv","id":"1902.04120","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04120","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04120v2","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04120","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_12","alias_value":"NSTDZ3HWE2TJ","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_16","alias_value":"NSTDZ3HWE2TJVXCA","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_8","alias_value":"NSTDZ3HW","created_at":"2026-07-05T07:54:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NSTDZ3HWE2TJVXCAQEYAXZ76FU","target":"record","payload":{"canonical_record":{"source":{"id":"1902.04120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-11T20:00:46Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"2149c9c228474a8015bb1a8fab5dfe247f633bfb87b07d0735f9edd32203a467","abstract_canon_sha256":"d93ea7f239178f0470c2aa338600add81e27419d684a706b615300bf8bb3b0de"},"schema_version":"1.0"},"canonical_sha256":"6ca63cecf626a69adc4081300be7fe2d083a639ba7d001d699fcbb2ebb7dfef0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:54:27.937137Z","signature_b64":"jXBz794CDaSOu2DfNADvqwpTt6YOs9LPu4wf/j3fgh5f6/pTXkvGaO9sRjHleTMumulLc7Z40rCe44s3jSVCAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ca63cecf626a69adc4081300be7fe2d083a639ba7d001d699fcbb2ebb7dfef0","last_reissued_at":"2026-07-05T07:54:27.936646Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:54:27.936646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.04120","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":"2026-07-05T07:54:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+bZCeXOvioaR6vQIlfMSsUpozxykATbvbLfEdaY1HOmRoF8FcGCAFdO6POeqqhPi8wnvMAi5dHf018BCjJCRBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:46:02.224535Z"},"content_sha256":"1fd2dcb29425d4ecd958d57050cf27638d87eccac53367a62f50858ab275d2a4","schema_version":"1.0","event_id":"sha256:1fd2dcb29425d4ecd958d57050cf27638d87eccac53367a62f50858ab275d2a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NSTDZ3HWE2TJVXCAQEYAXZ76FU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-harmonic generation in Su-Schrieffer-Heeger chains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"physics.optics","authors_text":"Dieter Bauer, Hannah J\\\"ur{\\ss}","submitted_at":"2019-02-11T20:00:46Z","abstract_excerpt":"Su-Schrieffer-Heeger (SSH) chains are the simplest model systems that display topological edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an external laser field of a frequency much smaller than the band gap. We find huge differences between the harmonic yield for the two topological phases, similar to recent results obtained with more demanding time-dependent density functional calculations [D. Bauer, K.K. Hansen, Phys. Rev. Lett. 120, 177401 (2018)]. This shows that the tight-binding SSH model captures the essential topological aspects of the laser-chain int"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04120","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1902.04120/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":"2026-07-05T07:54:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"37B+BD8tg1x+lMmSKHGK41lmTErG+dj4ztvs25+DChWF8C/hx1Kjv/5zZahPY3fUUmq83QjpgYyNexkr4q4QDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:46:02.225079Z"},"content_sha256":"433d91ca87d12d72e5e4ebb2911e8049244f18d42a4be70a1a1cde37859015ab","schema_version":"1.0","event_id":"sha256:433d91ca87d12d72e5e4ebb2911e8049244f18d42a4be70a1a1cde37859015ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/bundle.json","state_url":"https://pith.science/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/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":"2026-08-10T18:46:02Z","links":{"resolver":"https://pith.science/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU","bundle":"https://pith.science/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/bundle.json","state":"https://pith.science/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NSTDZ3HWE2TJVXCAQEYAXZ76FU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NSTDZ3HWE2TJVXCAQEYAXZ76FU","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":"d93ea7f239178f0470c2aa338600add81e27419d684a706b615300bf8bb3b0de","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-11T20:00:46Z","title_canon_sha256":"2149c9c228474a8015bb1a8fab5dfe247f633bfb87b07d0735f9edd32203a467"},"schema_version":"1.0","source":{"id":"1902.04120","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04120","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04120v2","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04120","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_12","alias_value":"NSTDZ3HWE2TJ","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_16","alias_value":"NSTDZ3HWE2TJVXCA","created_at":"2026-07-05T07:54:27Z"},{"alias_kind":"pith_short_8","alias_value":"NSTDZ3HW","created_at":"2026-07-05T07:54:27Z"}],"graph_snapshots":[{"event_id":"sha256:433d91ca87d12d72e5e4ebb2911e8049244f18d42a4be70a1a1cde37859015ab","target":"graph","created_at":"2026-07-05T07:54:27Z","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/1902.04120/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Su-Schrieffer-Heeger (SSH) chains are the simplest model systems that display topological edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an external laser field of a frequency much smaller than the band gap. We find huge differences between the harmonic yield for the two topological phases, similar to recent results obtained with more demanding time-dependent density functional calculations [D. Bauer, K.K. Hansen, Phys. Rev. Lett. 120, 177401 (2018)]. This shows that the tight-binding SSH model captures the essential topological aspects of the laser-chain int","authors_text":"Dieter Bauer, Hannah J\\\"ur{\\ss}","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-11T20:00:46Z","title":"High-harmonic generation in Su-Schrieffer-Heeger chains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04120","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":"sha256:1fd2dcb29425d4ecd958d57050cf27638d87eccac53367a62f50858ab275d2a4","target":"record","created_at":"2026-07-05T07:54:27Z","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":"d93ea7f239178f0470c2aa338600add81e27419d684a706b615300bf8bb3b0de","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-11T20:00:46Z","title_canon_sha256":"2149c9c228474a8015bb1a8fab5dfe247f633bfb87b07d0735f9edd32203a467"},"schema_version":"1.0","source":{"id":"1902.04120","kind":"arxiv","version":2}},"canonical_sha256":"6ca63cecf626a69adc4081300be7fe2d083a639ba7d001d699fcbb2ebb7dfef0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ca63cecf626a69adc4081300be7fe2d083a639ba7d001d699fcbb2ebb7dfef0","first_computed_at":"2026-07-05T07:54:27.936646Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:54:27.936646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jXBz794CDaSOu2DfNADvqwpTt6YOs9LPu4wf/j3fgh5f6/pTXkvGaO9sRjHleTMumulLc7Z40rCe44s3jSVCAw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:54:27.937137Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.04120","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fd2dcb29425d4ecd958d57050cf27638d87eccac53367a62f50858ab275d2a4","sha256:433d91ca87d12d72e5e4ebb2911e8049244f18d42a4be70a1a1cde37859015ab"],"state_sha256":"43d5d27dcf8ecd9344782656a528d40e3c49f9f85fc2c4b745b9793204b0426a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mF3sysOCpNv1cxsH6ukSMTqYfyGC9IGHjhjfbAaOwsmh1NKnnNfT0narPUpvThIumC+LNvzjMbEOARfvsQayDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T18:46:02.229046Z","bundle_sha256":"061572b10fdf4959dca5d965c58d848e277cd6396618477ad8651ffe6366f9a6"}}