{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OYETJYVSA223GX3NKER2XGLFIG","short_pith_number":"pith:OYETJYVS","canonical_record":{"source":{"id":"2502.17569","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-02-24T19:00:08Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"3040c7c8a643f67513f6e34b8726b646b272c659deec543c790a0978ff1f7670","abstract_canon_sha256":"cb31a15ef149dd1e738352407926ee26fbd45a11a136c8e79948dbc0e82c1682"},"schema_version":"1.0"},"canonical_sha256":"760934e2b206b5b35f6d5123ab99654192941de65ceaf194c98ad65cf5bd6840","source":{"kind":"arxiv","id":"2502.17569","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.17569","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"arxiv_version","alias_value":"2502.17569v1","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.17569","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_12","alias_value":"OYETJYVSA223","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_16","alias_value":"OYETJYVSA223GX3N","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_8","alias_value":"OYETJYVS","created_at":"2026-07-05T10:19:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OYETJYVSA223GX3NKER2XGLFIG","target":"record","payload":{"canonical_record":{"source":{"id":"2502.17569","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-02-24T19:00:08Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"3040c7c8a643f67513f6e34b8726b646b272c659deec543c790a0978ff1f7670","abstract_canon_sha256":"cb31a15ef149dd1e738352407926ee26fbd45a11a136c8e79948dbc0e82c1682"},"schema_version":"1.0"},"canonical_sha256":"760934e2b206b5b35f6d5123ab99654192941de65ceaf194c98ad65cf5bd6840","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:19:12.825064Z","signature_b64":"M9RkYcgMHpoZAJd1IDIAW0F4X0AMQSbaiptArpSPzbUw7DyJudVS5OEbU4/UdRhaWrQDKTGBOXiECYQaGd+OCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"760934e2b206b5b35f6d5123ab99654192941de65ceaf194c98ad65cf5bd6840","last_reissued_at":"2026-07-05T10:19:12.824535Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:19:12.824535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.17569","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":"2026-07-05T10:19:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kHxY7WdLPkTS4vFDr4T+5gCJ7cjzMfzNbti491Bvfdxmcfe9uoDgrSpY5yz0z2uufYXW+MoRPM+5Tvn6QPN8Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:26:37.931750Z"},"content_sha256":"19f8369790cbffe72c438b47842bedfd73e18863549f5e9d6b317c7efaffdf2a","schema_version":"1.0","event_id":"sha256:19f8369790cbffe72c438b47842bedfd73e18863549f5e9d6b317c7efaffdf2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OYETJYVSA223GX3NKER2XGLFIG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shining light on collective modes in moir\\'e fractional Chern insulators","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Ahmed Abouelkomsan, Aidan Reddy, Liang Fu, Nisarga Paul","submitted_at":"2025-02-24T19:00:08Z","abstract_excerpt":"We show that collective excitations and optical responses of moir\\'e fractional Chern insulators (FCIs) drastically differ from those of standard fractional quantum Hall (FQH) states in a Landau level. By constructing a variational wavefunction that incorporates the moir\\'e lattice effect, we capture the collective modes in FCIs across a range of crystal momenta including the roton minimum. Interestingly, new collective modes -- ``fractional excitons'' -- are found in the long wavelength limit ($\\boldsymbol{q} \\rightarrow 0$) at low energy below the excitation continuum, distinct from the FQH "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.17569","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/2502.17569/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":"2026-07-05T10:19:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+AyWfvEM5HPRiIXez/30tHMKU1gB4m7Bqz2GCgi94Ytifk6gnhp7X55uzpw5HLQPWoVgiLyGDZ+A7SE+k7VNDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:26:37.932265Z"},"content_sha256":"d36563d10c25af218aafef40e9931439cf84520e4950ed527d784c9b7b66ab86","schema_version":"1.0","event_id":"sha256:d36563d10c25af218aafef40e9931439cf84520e4950ed527d784c9b7b66ab86"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OYETJYVSA223GX3NKER2XGLFIG/bundle.json","state_url":"https://pith.science/pith/OYETJYVSA223GX3NKER2XGLFIG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OYETJYVSA223GX3NKER2XGLFIG/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":"2026-08-07T16:26:37Z","links":{"resolver":"https://pith.science/pith/OYETJYVSA223GX3NKER2XGLFIG","bundle":"https://pith.science/pith/OYETJYVSA223GX3NKER2XGLFIG/bundle.json","state":"https://pith.science/pith/OYETJYVSA223GX3NKER2XGLFIG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OYETJYVSA223GX3NKER2XGLFIG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OYETJYVSA223GX3NKER2XGLFIG","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":"cb31a15ef149dd1e738352407926ee26fbd45a11a136c8e79948dbc0e82c1682","cross_cats_sorted":["cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-02-24T19:00:08Z","title_canon_sha256":"3040c7c8a643f67513f6e34b8726b646b272c659deec543c790a0978ff1f7670"},"schema_version":"1.0","source":{"id":"2502.17569","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.17569","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"arxiv_version","alias_value":"2502.17569v1","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.17569","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_12","alias_value":"OYETJYVSA223","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_16","alias_value":"OYETJYVSA223GX3N","created_at":"2026-07-05T10:19:12Z"},{"alias_kind":"pith_short_8","alias_value":"OYETJYVS","created_at":"2026-07-05T10:19:12Z"}],"graph_snapshots":[{"event_id":"sha256:d36563d10c25af218aafef40e9931439cf84520e4950ed527d784c9b7b66ab86","target":"graph","created_at":"2026-07-05T10:19:12Z","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/2502.17569/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that collective excitations and optical responses of moir\\'e fractional Chern insulators (FCIs) drastically differ from those of standard fractional quantum Hall (FQH) states in a Landau level. By constructing a variational wavefunction that incorporates the moir\\'e lattice effect, we capture the collective modes in FCIs across a range of crystal momenta including the roton minimum. Interestingly, new collective modes -- ``fractional excitons'' -- are found in the long wavelength limit ($\\boldsymbol{q} \\rightarrow 0$) at low energy below the excitation continuum, distinct from the FQH ","authors_text":"Ahmed Abouelkomsan, Aidan Reddy, Liang Fu, Nisarga Paul","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-02-24T19:00:08Z","title":"Shining light on collective modes in moir\\'e fractional Chern insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.17569","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":"sha256:19f8369790cbffe72c438b47842bedfd73e18863549f5e9d6b317c7efaffdf2a","target":"record","created_at":"2026-07-05T10:19:12Z","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":"cb31a15ef149dd1e738352407926ee26fbd45a11a136c8e79948dbc0e82c1682","cross_cats_sorted":["cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-02-24T19:00:08Z","title_canon_sha256":"3040c7c8a643f67513f6e34b8726b646b272c659deec543c790a0978ff1f7670"},"schema_version":"1.0","source":{"id":"2502.17569","kind":"arxiv","version":1}},"canonical_sha256":"760934e2b206b5b35f6d5123ab99654192941de65ceaf194c98ad65cf5bd6840","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"760934e2b206b5b35f6d5123ab99654192941de65ceaf194c98ad65cf5bd6840","first_computed_at":"2026-07-05T10:19:12.824535Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:19:12.824535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M9RkYcgMHpoZAJd1IDIAW0F4X0AMQSbaiptArpSPzbUw7DyJudVS5OEbU4/UdRhaWrQDKTGBOXiECYQaGd+OCw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:19:12.825064Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.17569","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19f8369790cbffe72c438b47842bedfd73e18863549f5e9d6b317c7efaffdf2a","sha256:d36563d10c25af218aafef40e9931439cf84520e4950ed527d784c9b7b66ab86"],"state_sha256":"c787616d9d2a55352b79e38dff125c852726fbd338cf1e97c0c320d89178ee7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cQqxxNhmxp25HWQdiBALVgTusF0UzsqWjsjJ46u6js6uLthhLB5BTcyjmIViYZisauyhgPpg3rs/1KnePAjfAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:26:37.936180Z","bundle_sha256":"e966d68ec2d8fa3fa8e518c31fd63716be71c1affaf957cc7c52e086f3df007b"}}