{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3773OB2AZTKGDCFLXZH4IL4J6I","short_pith_number":"pith:3773OB2A","canonical_record":{"source":{"id":"1912.00930","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-02T16:56:55Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"e66101ec7f41de3f55e1367d962fb99346c7627385bb43020863a82347fc91db","abstract_canon_sha256":"f6cd809a422c2c536c77765c244b34f37acd03a52a773868e9f2385c7200e3f5"},"schema_version":"1.0"},"canonical_sha256":"dfffb70740ccd46188abbe4fc42f89f2293cc4429a6bdce871c440df804017f1","source":{"kind":"arxiv","id":"1912.00930","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.00930","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"arxiv_version","alias_value":"1912.00930v1","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.00930","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_12","alias_value":"3773OB2AZTKG","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_16","alias_value":"3773OB2AZTKGDCFL","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_8","alias_value":"3773OB2A","created_at":"2026-07-05T00:44:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3773OB2AZTKGDCFLXZH4IL4J6I","target":"record","payload":{"canonical_record":{"source":{"id":"1912.00930","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-02T16:56:55Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"e66101ec7f41de3f55e1367d962fb99346c7627385bb43020863a82347fc91db","abstract_canon_sha256":"f6cd809a422c2c536c77765c244b34f37acd03a52a773868e9f2385c7200e3f5"},"schema_version":"1.0"},"canonical_sha256":"dfffb70740ccd46188abbe4fc42f89f2293cc4429a6bdce871c440df804017f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:44:28.115050Z","signature_b64":"7Y7z5d2Z5LRk9KWRrsBDpuuCgYfErORloHcFDz7MTRMRqWnV5egG7XR0v/h80Wm7z7Nw/TmKhEryQTrmDNyRAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfffb70740ccd46188abbe4fc42f89f2293cc4429a6bdce871c440df804017f1","last_reissued_at":"2026-07-05T00:44:28.114702Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:44:28.114702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.00930","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":"2026-07-05T00:44:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a9rS9WWvUqyI/mul8SK0Hmx26Oh3ViRlbZa0KpcrDgChVBkRpAObvecGJcYy06Mw2SJBNMhIbNjsYMg8UqkgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T07:51:44.553688Z"},"content_sha256":"5393b511dd000fd6dde36f5317417003313fa9b51e67eb68e606051d18436b94","schema_version":"1.0","event_id":"sha256:5393b511dd000fd6dde36f5317417003313fa9b51e67eb68e606051d18436b94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3773OB2AZTKGDCFLXZH4IL4J6I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Floquet-engineering of nodal rings and nodal spheres and their characterization using the quantum metric","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","hep-th"],"primary_cat":"cond-mat.mes-hall","authors_text":"Giandomenico Palumbo, Grazia Salerno, Nathan Goldman","submitted_at":"2019-12-02T16:56:55Z","abstract_excerpt":"Semimetals exhibiting nodal lines or nodal surfaces represent a novel class of topological states of matter. While conventional Weyl semimetals exhibit momentum-space Dirac monopoles, these more exotic semimetals can feature unusual topological defects that are analogous to extended monopoles. In this work, we describe a scheme by which nodal rings and nodal spheres can be realized in synthetic quantum matter through well-defined periodic-driving protocols. As a central result of our work, we characterize these nodal defects through the quantum metric, which is a gauge-invariant quantity assoc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.00930","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/1912.00930/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":"2026-07-05T00:44:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pt9cjk6Q7YukkCL9VV+s7rOVsFm6wPLoRy7PTFKViNl10UiB5+VZJZKZJefPJ0HInbKN1Ig6t9twi6ngv66kAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T07:51:44.554204Z"},"content_sha256":"c572ac8196f540528067a258ebed6191a699e3569f7b3bc2b3bd9aadb4499d4f","schema_version":"1.0","event_id":"sha256:c572ac8196f540528067a258ebed6191a699e3569f7b3bc2b3bd9aadb4499d4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3773OB2AZTKGDCFLXZH4IL4J6I/bundle.json","state_url":"https://pith.science/pith/3773OB2AZTKGDCFLXZH4IL4J6I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3773OB2AZTKGDCFLXZH4IL4J6I/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":"2026-08-14T07:51:44Z","links":{"resolver":"https://pith.science/pith/3773OB2AZTKGDCFLXZH4IL4J6I","bundle":"https://pith.science/pith/3773OB2AZTKGDCFLXZH4IL4J6I/bundle.json","state":"https://pith.science/pith/3773OB2AZTKGDCFLXZH4IL4J6I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3773OB2AZTKGDCFLXZH4IL4J6I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3773OB2AZTKGDCFLXZH4IL4J6I","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":"f6cd809a422c2c536c77765c244b34f37acd03a52a773868e9f2385c7200e3f5","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-02T16:56:55Z","title_canon_sha256":"e66101ec7f41de3f55e1367d962fb99346c7627385bb43020863a82347fc91db"},"schema_version":"1.0","source":{"id":"1912.00930","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.00930","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"arxiv_version","alias_value":"1912.00930v1","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.00930","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_12","alias_value":"3773OB2AZTKG","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_16","alias_value":"3773OB2AZTKGDCFL","created_at":"2026-07-05T00:44:28Z"},{"alias_kind":"pith_short_8","alias_value":"3773OB2A","created_at":"2026-07-05T00:44:28Z"}],"graph_snapshots":[{"event_id":"sha256:c572ac8196f540528067a258ebed6191a699e3569f7b3bc2b3bd9aadb4499d4f","target":"graph","created_at":"2026-07-05T00:44:28Z","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/1912.00930/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Semimetals exhibiting nodal lines or nodal surfaces represent a novel class of topological states of matter. While conventional Weyl semimetals exhibit momentum-space Dirac monopoles, these more exotic semimetals can feature unusual topological defects that are analogous to extended monopoles. In this work, we describe a scheme by which nodal rings and nodal spheres can be realized in synthetic quantum matter through well-defined periodic-driving protocols. As a central result of our work, we characterize these nodal defects through the quantum metric, which is a gauge-invariant quantity assoc","authors_text":"Giandomenico Palumbo, Grazia Salerno, Nathan Goldman","cross_cats":["cond-mat.quant-gas","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-02T16:56:55Z","title":"Floquet-engineering of nodal rings and nodal spheres and their characterization using the quantum metric"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.00930","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":"sha256:5393b511dd000fd6dde36f5317417003313fa9b51e67eb68e606051d18436b94","target":"record","created_at":"2026-07-05T00:44:28Z","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":"f6cd809a422c2c536c77765c244b34f37acd03a52a773868e9f2385c7200e3f5","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-12-02T16:56:55Z","title_canon_sha256":"e66101ec7f41de3f55e1367d962fb99346c7627385bb43020863a82347fc91db"},"schema_version":"1.0","source":{"id":"1912.00930","kind":"arxiv","version":1}},"canonical_sha256":"dfffb70740ccd46188abbe4fc42f89f2293cc4429a6bdce871c440df804017f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfffb70740ccd46188abbe4fc42f89f2293cc4429a6bdce871c440df804017f1","first_computed_at":"2026-07-05T00:44:28.114702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:44:28.114702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Y7z5d2Z5LRk9KWRrsBDpuuCgYfErORloHcFDz7MTRMRqWnV5egG7XR0v/h80Wm7z7Nw/TmKhEryQTrmDNyRAA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:44:28.115050Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.00930","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5393b511dd000fd6dde36f5317417003313fa9b51e67eb68e606051d18436b94","sha256:c572ac8196f540528067a258ebed6191a699e3569f7b3bc2b3bd9aadb4499d4f"],"state_sha256":"e0ab28ce51bb52998eebffb9cd44903e4f8ad599655677fa0e0a4033e0fb0345"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"amnISw065sRg74GEEcVwpEZOwu7QN85fxKd0S9bNgJpwyd5yN7rUCNifl/hAYG/5gqCvDN+Pwc4oIAHMC1xHAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T07:51:44.559622Z","bundle_sha256":"fa95273df68db9ad32e308287a6b0e936c5762fb6367e9903575dc7bccb13252"}}