{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:W7UPAYXISAH2WCKF53HKEE257T","short_pith_number":"pith:W7UPAYXI","canonical_record":{"source":{"id":"2502.02640","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-04T19:00:01Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"032a3a1043211e37111e7e7efd99839af17918ebff285fd31b577bb452962150","abstract_canon_sha256":"7bbb51b83683e567e400f88f862b581bf09f83079bafc85f727f6b0bff53174b"},"schema_version":"1.0"},"canonical_sha256":"b7e8f062e8900fab0945eecea2135dfcd2558822032e5721aca02ab5a2fed72e","source":{"kind":"arxiv","id":"2502.02640","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.02640","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2502.02640v2","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.02640","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"W7UPAYXISAH2","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"W7UPAYXISAH2WCKF","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"W7UPAYXI","created_at":"2026-07-05T10:39:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:W7UPAYXISAH2WCKF53HKEE257T","target":"record","payload":{"canonical_record":{"source":{"id":"2502.02640","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-04T19:00:01Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"032a3a1043211e37111e7e7efd99839af17918ebff285fd31b577bb452962150","abstract_canon_sha256":"7bbb51b83683e567e400f88f862b581bf09f83079bafc85f727f6b0bff53174b"},"schema_version":"1.0"},"canonical_sha256":"b7e8f062e8900fab0945eecea2135dfcd2558822032e5721aca02ab5a2fed72e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:39:25.836490Z","signature_b64":"GiAiD7DmAJbIl3PJ0pdE5JjlKkFk6Z715ReLniNfHEnEvUGi/3vGdfn93DrJIoeamIULwpYnT3dyoHL3fiq3Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7e8f062e8900fab0945eecea2135dfcd2558822032e5721aca02ab5a2fed72e","last_reissued_at":"2026-07-05T10:39:25.835996Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:39:25.835996Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.02640","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":"2026-07-05T10:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UPXwsB2bAbzf+2KmVUYU6+PSgbdnKL6rH2jHtIuJbtrc4fkqMRVT7FZlWbquJHC52ZjR28gDguPZim6F9l0dDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T11:50:05.098124Z"},"content_sha256":"de2ccd83a06e2fbf71cc5170fee1c200e1a12732b40bb9f92790ff503914b4ca","schema_version":"1.0","event_id":"sha256:de2ccd83a06e2fbf71cc5170fee1c200e1a12732b40bb9f92790ff503914b4ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:W7UPAYXISAH2WCKF53HKEE257T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamics and lifetime of geometric excitations in moir\\'e systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"Bo Yang, Dung Xuan Nguyen, Guangyue Ji, Joe Huxford, Yong Baek Kim, Yuzhu Wang","submitted_at":"2025-02-04T19:00:01Z","abstract_excerpt":"We show that spin-2 geometric excitations, known as graviton modes, generally exhibit vanishing lifetimes in lattice Chern bands, including in moir\\'e systems. In contrast to the Landau levels, we first numerically demonstrate that the prominent graviton peaks in spectral functions diminish rapidly with increasing system sizes. We explore how the choice of interaction affects the strength of these peaks, with short-ranged interactions pushing the graviton mode far into the continuum of excitations, where it can be significantly scattered due to the increased density of states. We also analytic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.02640","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/2502.02640/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":"2026-07-05T10:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fHunUqiaRq/NJyFpU9+yb4xnrI8SPf9L4pVtyScZ1iYU51lFE54lvmgsjkKSmod0brQdWNENFScoiAxvyNv+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T11:50:05.098634Z"},"content_sha256":"a59c04f88248ad06e23d02aded8b6e4e145ad75fe636d14ee9e7907438f05d5d","schema_version":"1.0","event_id":"sha256:a59c04f88248ad06e23d02aded8b6e4e145ad75fe636d14ee9e7907438f05d5d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W7UPAYXISAH2WCKF53HKEE257T/bundle.json","state_url":"https://pith.science/pith/W7UPAYXISAH2WCKF53HKEE257T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W7UPAYXISAH2WCKF53HKEE257T/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":"2026-08-09T11:50:05Z","links":{"resolver":"https://pith.science/pith/W7UPAYXISAH2WCKF53HKEE257T","bundle":"https://pith.science/pith/W7UPAYXISAH2WCKF53HKEE257T/bundle.json","state":"https://pith.science/pith/W7UPAYXISAH2WCKF53HKEE257T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W7UPAYXISAH2WCKF53HKEE257T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:W7UPAYXISAH2WCKF53HKEE257T","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":"7bbb51b83683e567e400f88f862b581bf09f83079bafc85f727f6b0bff53174b","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-04T19:00:01Z","title_canon_sha256":"032a3a1043211e37111e7e7efd99839af17918ebff285fd31b577bb452962150"},"schema_version":"1.0","source":{"id":"2502.02640","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.02640","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2502.02640v2","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.02640","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"W7UPAYXISAH2","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"W7UPAYXISAH2WCKF","created_at":"2026-07-05T10:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"W7UPAYXI","created_at":"2026-07-05T10:39:25Z"}],"graph_snapshots":[{"event_id":"sha256:a59c04f88248ad06e23d02aded8b6e4e145ad75fe636d14ee9e7907438f05d5d","target":"graph","created_at":"2026-07-05T10:39:25Z","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/2502.02640/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that spin-2 geometric excitations, known as graviton modes, generally exhibit vanishing lifetimes in lattice Chern bands, including in moir\\'e systems. In contrast to the Landau levels, we first numerically demonstrate that the prominent graviton peaks in spectral functions diminish rapidly with increasing system sizes. We explore how the choice of interaction affects the strength of these peaks, with short-ranged interactions pushing the graviton mode far into the continuum of excitations, where it can be significantly scattered due to the increased density of states. We also analytic","authors_text":"Bo Yang, Dung Xuan Nguyen, Guangyue Ji, Joe Huxford, Yong Baek Kim, Yuzhu Wang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-04T19:00:01Z","title":"Dynamics and lifetime of geometric excitations in moir\\'e systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.02640","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:de2ccd83a06e2fbf71cc5170fee1c200e1a12732b40bb9f92790ff503914b4ca","target":"record","created_at":"2026-07-05T10:39:25Z","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":"7bbb51b83683e567e400f88f862b581bf09f83079bafc85f727f6b0bff53174b","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-04T19:00:01Z","title_canon_sha256":"032a3a1043211e37111e7e7efd99839af17918ebff285fd31b577bb452962150"},"schema_version":"1.0","source":{"id":"2502.02640","kind":"arxiv","version":2}},"canonical_sha256":"b7e8f062e8900fab0945eecea2135dfcd2558822032e5721aca02ab5a2fed72e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7e8f062e8900fab0945eecea2135dfcd2558822032e5721aca02ab5a2fed72e","first_computed_at":"2026-07-05T10:39:25.835996Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:39:25.835996Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GiAiD7DmAJbIl3PJ0pdE5JjlKkFk6Z715ReLniNfHEnEvUGi/3vGdfn93DrJIoeamIULwpYnT3dyoHL3fiq3Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:39:25.836490Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.02640","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de2ccd83a06e2fbf71cc5170fee1c200e1a12732b40bb9f92790ff503914b4ca","sha256:a59c04f88248ad06e23d02aded8b6e4e145ad75fe636d14ee9e7907438f05d5d"],"state_sha256":"74f64fa2d547680356c937258520b5b31c65dba2779d17d931bbd891572fac15"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SOuQLQpdcLMgfFydTIErmx5R2hGoH8kO0NQce64nRRP7PJjnOu+eFsAp1XHXw1Jai/Gc0teGCmej7HTAJeiMDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T11:50:05.103724Z","bundle_sha256":"f463bbbe1980646dd221477f0dab1d306e50ef7558e74af060b507d638c9ec72"}}