{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:4WZHO6LIJ6F7WHGBIYYWDDLUWG","short_pith_number":"pith:4WZHO6LI","canonical_record":{"source":{"id":"2308.08418","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2023-08-16T15:06:28Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"0272c1b39ba817d1b806c22f7e066be8b668ea93d8c6262a9a594fa0e58781da","abstract_canon_sha256":"f5a40adcd32b7b2b9a6c58a3ad79dda501abcfcf58041c85f608abc4f01376ce"},"schema_version":"1.0"},"canonical_sha256":"e5b27779684f8bfb1cc14631618d74b1b32c66cb0a345bf389a97e3994f83c52","source":{"kind":"arxiv","id":"2308.08418","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08418","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08418v2","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08418","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_12","alias_value":"4WZHO6LIJ6F7","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_16","alias_value":"4WZHO6LIJ6F7WHGB","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_8","alias_value":"4WZHO6LI","created_at":"2026-07-05T06:42:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:4WZHO6LIJ6F7WHGBIYYWDDLUWG","target":"record","payload":{"canonical_record":{"source":{"id":"2308.08418","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2023-08-16T15:06:28Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"0272c1b39ba817d1b806c22f7e066be8b668ea93d8c6262a9a594fa0e58781da","abstract_canon_sha256":"f5a40adcd32b7b2b9a6c58a3ad79dda501abcfcf58041c85f608abc4f01376ce"},"schema_version":"1.0"},"canonical_sha256":"e5b27779684f8bfb1cc14631618d74b1b32c66cb0a345bf389a97e3994f83c52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:42:25.373852Z","signature_b64":"beV0DGdViiECUnYOFNw4Zp4Qv43UI8VzI7Zr2nuO1cop705Pf7QdMSG3IRyJnrALtLz2P+00Qj46+JO5Lq/DAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5b27779684f8bfb1cc14631618d74b1b32c66cb0a345bf389a97e3994f83c52","last_reissued_at":"2026-07-05T06:42:25.373377Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:42:25.373377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.08418","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":"2026-07-05T06:42:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bEfY4fkGo0pzY2Vi05JFYgYxqHuyM+qZlXbTo3hX06RZl5M6SQ6F/e41aEgdR83tZd7Tt5men4LH8e/JLJCtDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T07:54:12.963977Z"},"content_sha256":"6cddea27b4f332a10610112bb5f7aa0380c16a4205625071e54e3a03f3224fe0","schema_version":"1.0","event_id":"sha256:6cddea27b4f332a10610112bb5f7aa0380c16a4205625071e54e3a03f3224fe0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:4WZHO6LIJ6F7WHGBIYYWDDLUWG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lasing, quantum geometry and coherence in non-Hermitian flat bands","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Ivan Amelio, Nathan Goldman","submitted_at":"2023-08-16T15:06:28Z","abstract_excerpt":"We show that lasing in flat band lattices can be stabilized by means of the geometrical properties of the Bloch states, in settings where the single-particle dispersion is flat in both its real and imaginary parts. We illustrate a general projection method and compute the collective excitations, which are shown to display a diffusive behavior ruled by quantum geometry through a peculiar coefficient involving gain, losses and interactions. Then, we analytically show that the phase dynamics display a surprising cancellation of the Kardar-Parisi-Zhang nonlinearity at the leading order. Because of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08418","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/2308.08418/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":"2026-07-05T06:42:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1rR448oYiOodAdwudbGiCMKhaXy6RE4NYYWJ69PMZQwdxkHBMyGuP7WakjlF87NoegVU8w2K2XS+l1ljk+J3Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T07:54:12.964811Z"},"content_sha256":"e1a48ccd52ada4e22f32930f83f423fd6fe3d499d50b57f4ca9f53884a5ec352","schema_version":"1.0","event_id":"sha256:e1a48ccd52ada4e22f32930f83f423fd6fe3d499d50b57f4ca9f53884a5ec352"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/bundle.json","state_url":"https://pith.science/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/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":"2026-08-14T07:54:12Z","links":{"resolver":"https://pith.science/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG","bundle":"https://pith.science/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/bundle.json","state":"https://pith.science/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WZHO6LIJ6F7WHGBIYYWDDLUWG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:4WZHO6LIJ6F7WHGBIYYWDDLUWG","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":"f5a40adcd32b7b2b9a6c58a3ad79dda501abcfcf58041c85f608abc4f01376ce","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2023-08-16T15:06:28Z","title_canon_sha256":"0272c1b39ba817d1b806c22f7e066be8b668ea93d8c6262a9a594fa0e58781da"},"schema_version":"1.0","source":{"id":"2308.08418","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08418","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08418v2","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08418","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_12","alias_value":"4WZHO6LIJ6F7","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_16","alias_value":"4WZHO6LIJ6F7WHGB","created_at":"2026-07-05T06:42:25Z"},{"alias_kind":"pith_short_8","alias_value":"4WZHO6LI","created_at":"2026-07-05T06:42:25Z"}],"graph_snapshots":[{"event_id":"sha256:e1a48ccd52ada4e22f32930f83f423fd6fe3d499d50b57f4ca9f53884a5ec352","target":"graph","created_at":"2026-07-05T06:42:25Z","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/2308.08418/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that lasing in flat band lattices can be stabilized by means of the geometrical properties of the Bloch states, in settings where the single-particle dispersion is flat in both its real and imaginary parts. We illustrate a general projection method and compute the collective excitations, which are shown to display a diffusive behavior ruled by quantum geometry through a peculiar coefficient involving gain, losses and interactions. Then, we analytically show that the phase dynamics display a surprising cancellation of the Kardar-Parisi-Zhang nonlinearity at the leading order. Because of","authors_text":"Ivan Amelio, Nathan Goldman","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2023-08-16T15:06:28Z","title":"Lasing, quantum geometry and coherence in non-Hermitian flat bands"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08418","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":"sha256:6cddea27b4f332a10610112bb5f7aa0380c16a4205625071e54e3a03f3224fe0","target":"record","created_at":"2026-07-05T06:42:25Z","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":"f5a40adcd32b7b2b9a6c58a3ad79dda501abcfcf58041c85f608abc4f01376ce","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2023-08-16T15:06:28Z","title_canon_sha256":"0272c1b39ba817d1b806c22f7e066be8b668ea93d8c6262a9a594fa0e58781da"},"schema_version":"1.0","source":{"id":"2308.08418","kind":"arxiv","version":2}},"canonical_sha256":"e5b27779684f8bfb1cc14631618d74b1b32c66cb0a345bf389a97e3994f83c52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5b27779684f8bfb1cc14631618d74b1b32c66cb0a345bf389a97e3994f83c52","first_computed_at":"2026-07-05T06:42:25.373377Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:42:25.373377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"beV0DGdViiECUnYOFNw4Zp4Qv43UI8VzI7Zr2nuO1cop705Pf7QdMSG3IRyJnrALtLz2P+00Qj46+JO5Lq/DAw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:42:25.373852Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.08418","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cddea27b4f332a10610112bb5f7aa0380c16a4205625071e54e3a03f3224fe0","sha256:e1a48ccd52ada4e22f32930f83f423fd6fe3d499d50b57f4ca9f53884a5ec352"],"state_sha256":"3ee0133c7abd15ae3e2bbc641819db936a991d7b8996f5f211b6c37290a18865"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v0VMw7LpUTuPLNdu/tQQDejbirOCYrcFlogY49IRlpKzMsBlKU4dM8yYaJd39QbL+tQDSgS6ZAWTNS+DZnzfBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T07:54:12.970294Z","bundle_sha256":"25d872a8f31655d61b7e8bbbf666a4678cfad759d7bc3c289270ea3d6b74e06b"}}