{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:DPVFIEIPQ4HN4E5YE4QF4IZJTT","short_pith_number":"pith:DPVFIEIP","canonical_record":{"source":{"id":"1908.08789","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-23T12:40:10Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4c740a425133233b0150cff254f6443dd90d950c5e42d362b5140637a8829d15","abstract_canon_sha256":"5de69d03109d05124133118ecac8241b44826ffff59660af4c1d61ae8e9c13f4"},"schema_version":"1.0"},"canonical_sha256":"1bea54110f870ede13b827205e23299cc10066e1dd35effaf99300ad2804d485","source":{"kind":"arxiv","id":"1908.08789","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.08789","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"arxiv_version","alias_value":"1908.08789v2","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08789","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_12","alias_value":"DPVFIEIPQ4HN","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_16","alias_value":"DPVFIEIPQ4HN4E5Y","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_8","alias_value":"DPVFIEIP","created_at":"2026-07-05T00:23:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:DPVFIEIPQ4HN4E5YE4QF4IZJTT","target":"record","payload":{"canonical_record":{"source":{"id":"1908.08789","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-23T12:40:10Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4c740a425133233b0150cff254f6443dd90d950c5e42d362b5140637a8829d15","abstract_canon_sha256":"5de69d03109d05124133118ecac8241b44826ffff59660af4c1d61ae8e9c13f4"},"schema_version":"1.0"},"canonical_sha256":"1bea54110f870ede13b827205e23299cc10066e1dd35effaf99300ad2804d485","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:23:50.982195Z","signature_b64":"4RlTGbYkCVehshY3vcuS9lRQuBEX6/NXsbKkKOG2Hr1p1T2d6rAbDkKw5vgSgDc/yJ7Za/GZn9vMTb6kC5YEDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1bea54110f870ede13b827205e23299cc10066e1dd35effaf99300ad2804d485","last_reissued_at":"2026-07-05T00:23:50.981691Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:23:50.981691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.08789","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":"2026-07-05T00:23:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f1lAlVPjmavjMev9KFzYZ2hCvv0fug/6JXOdLwXsGRi99jSm/G3bd28Cb6wC4dJCzRZLOvPzXDVDYqhIOAf4CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T13:20:40.173121Z"},"content_sha256":"375a6c2581637879003600e1682306c7bb18c27b44cd0e5e0571b1797b2f2572","schema_version":"1.0","event_id":"sha256:375a6c2581637879003600e1682306c7bb18c27b44cd0e5e0571b1797b2f2572"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:DPVFIEIPQ4HN4E5YE4QF4IZJTT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of mechanical strain on the optical properties of nodal-line semimetal ZrSiS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.comp-ph","authors_text":"A. N. Rudenko, Shengjun Yuan, Weiqing Zhou","submitted_at":"2019-08-23T12:40:10Z","abstract_excerpt":"Optical properties of nodal-line semimetal ZrSiS are studied using first-principles calculations. Frequency-independent optical conductivity is a fingerprint of the infrared optical response in ZrSiS. We find that this characteristic feature is robust with respect to uniaxial compressive strain of up to 10 GPa, yet with the flat region being narrowed with increasing strain. Upon uniaxial tensile stress of 2 GPa, the Fermi surface undergoes a Lifshitz transition accompanied by a weakening of the interband screening, which reduces the spectral weight of infrared excitations. We also show that th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08789","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/1908.08789/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":"2026-07-05T00:23:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W5ss8zfnOcujZoPJwgW5XP1L60O9EkXzcGp695CKoY9FMK0Y0aNU4bU5eyvtG9QPRauU1tFqiDZN2cQDGe1FBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T13:20:40.174015Z"},"content_sha256":"6c43f3ec994c573c3147b023fd02c965886b62f9cbda25cc84d834d4437edb14","schema_version":"1.0","event_id":"sha256:6c43f3ec994c573c3147b023fd02c965886b62f9cbda25cc84d834d4437edb14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/bundle.json","state_url":"https://pith.science/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/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":"2026-08-16T13:20:40Z","links":{"resolver":"https://pith.science/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT","bundle":"https://pith.science/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/bundle.json","state":"https://pith.science/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DPVFIEIPQ4HN4E5YE4QF4IZJTT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DPVFIEIPQ4HN4E5YE4QF4IZJTT","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":"5de69d03109d05124133118ecac8241b44826ffff59660af4c1d61ae8e9c13f4","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-23T12:40:10Z","title_canon_sha256":"4c740a425133233b0150cff254f6443dd90d950c5e42d362b5140637a8829d15"},"schema_version":"1.0","source":{"id":"1908.08789","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.08789","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"arxiv_version","alias_value":"1908.08789v2","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08789","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_12","alias_value":"DPVFIEIPQ4HN","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_16","alias_value":"DPVFIEIPQ4HN4E5Y","created_at":"2026-07-05T00:23:50Z"},{"alias_kind":"pith_short_8","alias_value":"DPVFIEIP","created_at":"2026-07-05T00:23:50Z"}],"graph_snapshots":[{"event_id":"sha256:6c43f3ec994c573c3147b023fd02c965886b62f9cbda25cc84d834d4437edb14","target":"graph","created_at":"2026-07-05T00:23:50Z","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/1908.08789/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Optical properties of nodal-line semimetal ZrSiS are studied using first-principles calculations. Frequency-independent optical conductivity is a fingerprint of the infrared optical response in ZrSiS. We find that this characteristic feature is robust with respect to uniaxial compressive strain of up to 10 GPa, yet with the flat region being narrowed with increasing strain. Upon uniaxial tensile stress of 2 GPa, the Fermi surface undergoes a Lifshitz transition accompanied by a weakening of the interband screening, which reduces the spectral weight of infrared excitations. We also show that th","authors_text":"A. N. Rudenko, Shengjun Yuan, Weiqing Zhou","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-23T12:40:10Z","title":"Effect of mechanical strain on the optical properties of nodal-line semimetal ZrSiS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08789","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":"sha256:375a6c2581637879003600e1682306c7bb18c27b44cd0e5e0571b1797b2f2572","target":"record","created_at":"2026-07-05T00:23:50Z","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":"5de69d03109d05124133118ecac8241b44826ffff59660af4c1d61ae8e9c13f4","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-08-23T12:40:10Z","title_canon_sha256":"4c740a425133233b0150cff254f6443dd90d950c5e42d362b5140637a8829d15"},"schema_version":"1.0","source":{"id":"1908.08789","kind":"arxiv","version":2}},"canonical_sha256":"1bea54110f870ede13b827205e23299cc10066e1dd35effaf99300ad2804d485","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1bea54110f870ede13b827205e23299cc10066e1dd35effaf99300ad2804d485","first_computed_at":"2026-07-05T00:23:50.981691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:23:50.981691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4RlTGbYkCVehshY3vcuS9lRQuBEX6/NXsbKkKOG2Hr1p1T2d6rAbDkKw5vgSgDc/yJ7Za/GZn9vMTb6kC5YEDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:23:50.982195Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.08789","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:375a6c2581637879003600e1682306c7bb18c27b44cd0e5e0571b1797b2f2572","sha256:6c43f3ec994c573c3147b023fd02c965886b62f9cbda25cc84d834d4437edb14"],"state_sha256":"caeac2f2129a190faaa0a6f4e37363c410b5671b400ccb8cbfaca67c369bd4bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ANYrcQjLoWSdL6zm6BvTOTqtAaLFBeQAlbt5a+xhGYBJ709KM1jUgEOWZ53pfqIdt4M1XiAAwhgvbw272D41DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T13:20:40.179319Z","bundle_sha256":"fc6d28536c3070432f2d6d2e39eb2f156f5b0bcd2602a474b45cb2174caa8999"}}