{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:HLU7R6CZ72PY4ZJHGPOYVOFKC6","short_pith_number":"pith:HLU7R6CZ","canonical_record":{"source":{"id":"1103.3389","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-03-17T11:55:54Z","cross_cats_sorted":[],"title_canon_sha256":"cd7775a60e33d9ba1f8dd1dab07c1f4cc6f7e49adafef0e10c9ad51b900c9e97","abstract_canon_sha256":"c1a6e4cd7b809fa46578b8c3c257542a6fe973be4b56ddd24fcc711bac817449"},"schema_version":"1.0"},"canonical_sha256":"3ae9f8f859fe9f8e652733dd8ab8aa1796b31ccc0bd73c765143c0400ffc30ed","source":{"kind":"arxiv","id":"1103.3389","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.3389","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"1103.3389v3","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.3389","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"HLU7R6CZ72PY","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HLU7R6CZ72PY4ZJH","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HLU7R6CZ","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:HLU7R6CZ72PY4ZJHGPOYVOFKC6","target":"record","payload":{"canonical_record":{"source":{"id":"1103.3389","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-03-17T11:55:54Z","cross_cats_sorted":[],"title_canon_sha256":"cd7775a60e33d9ba1f8dd1dab07c1f4cc6f7e49adafef0e10c9ad51b900c9e97","abstract_canon_sha256":"c1a6e4cd7b809fa46578b8c3c257542a6fe973be4b56ddd24fcc711bac817449"},"schema_version":"1.0"},"canonical_sha256":"3ae9f8f859fe9f8e652733dd8ab8aa1796b31ccc0bd73c765143c0400ffc30ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:23.574988Z","signature_b64":"EKAdm4BUYT1PqRcoxuTk4IRcod/3WW0SgciWXB+COj3dko3SbXGuXMBEL1LhD2VszQAiFiaR+i+9Tb3OyZiMBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ae9f8f859fe9f8e652733dd8ab8aa1796b31ccc0bd73c765143c0400ffc30ed","last_reissued_at":"2026-05-18T03:55:23.574242Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:23.574242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.3389","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vu/BfQeVJAV4NQOoYXICm6SzS6/3mgNI0fyyUl8DKXm+Axf3jHmtQjRHrW9HKOu6ypDYheJneWQKtQzGUQtfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:00:43.974290Z"},"content_sha256":"93b56715e34ed530dbaccdb5b73ee0b4050c957eab09fdfcbe562a8e62ab1a09","schema_version":"1.0","event_id":"sha256:93b56715e34ed530dbaccdb5b73ee0b4050c957eab09fdfcbe562a8e62ab1a09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:HLU7R6CZ72PY4ZJHGPOYVOFKC6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PT-symmetry in honeycomb photonic lattices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alexander Szameit, Mikael C. Rechtsman, Mordechai Segev, Omri Bahat-Treidel","submitted_at":"2011-03-17T11:55:54Z","abstract_excerpt":"We apply gain/loss to honeycomb photonic lattices and show that the dispersion relation is identical to tachyons - particles with imaginary mass that travel faster than the speed of light. This is accompanied by PT-symmetry breaking in this structure. We further show that the PT-symmetry can be restored by deforming the lattice."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.3389","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T03:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N3t0stuRMUcfA+/k3vyWDe6HqPm02QGZKgvhCLXRT19ARx7yQojaUUQZCdRWg70c/8wAXI5jY30ZLSPnCu+YDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:00:43.974851Z"},"content_sha256":"a59da54254ff0bd459fc287fb3b51b5c2e9a76878b0824bfb5c2a6a221ae3b4d","schema_version":"1.0","event_id":"sha256:a59da54254ff0bd459fc287fb3b51b5c2e9a76878b0824bfb5c2a6a221ae3b4d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/bundle.json","state_url":"https://pith.science/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/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":"2026-05-26T11:00:43Z","links":{"resolver":"https://pith.science/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6","bundle":"https://pith.science/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/bundle.json","state":"https://pith.science/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HLU7R6CZ72PY4ZJHGPOYVOFKC6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:HLU7R6CZ72PY4ZJHGPOYVOFKC6","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":"c1a6e4cd7b809fa46578b8c3c257542a6fe973be4b56ddd24fcc711bac817449","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-03-17T11:55:54Z","title_canon_sha256":"cd7775a60e33d9ba1f8dd1dab07c1f4cc6f7e49adafef0e10c9ad51b900c9e97"},"schema_version":"1.0","source":{"id":"1103.3389","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.3389","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"1103.3389v3","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.3389","created_at":"2026-05-18T03:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"HLU7R6CZ72PY","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HLU7R6CZ72PY4ZJH","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HLU7R6CZ","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:a59da54254ff0bd459fc287fb3b51b5c2e9a76878b0824bfb5c2a6a221ae3b4d","target":"graph","created_at":"2026-05-18T03:55:23Z","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"},"paper":{"abstract_excerpt":"We apply gain/loss to honeycomb photonic lattices and show that the dispersion relation is identical to tachyons - particles with imaginary mass that travel faster than the speed of light. This is accompanied by PT-symmetry breaking in this structure. We further show that the PT-symmetry can be restored by deforming the lattice.","authors_text":"Alexander Szameit, Mikael C. Rechtsman, Mordechai Segev, Omri Bahat-Treidel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-03-17T11:55:54Z","title":"PT-symmetry in honeycomb photonic lattices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.3389","kind":"arxiv","version":3},"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":"sha256:93b56715e34ed530dbaccdb5b73ee0b4050c957eab09fdfcbe562a8e62ab1a09","target":"record","created_at":"2026-05-18T03:55:23Z","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":"c1a6e4cd7b809fa46578b8c3c257542a6fe973be4b56ddd24fcc711bac817449","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-03-17T11:55:54Z","title_canon_sha256":"cd7775a60e33d9ba1f8dd1dab07c1f4cc6f7e49adafef0e10c9ad51b900c9e97"},"schema_version":"1.0","source":{"id":"1103.3389","kind":"arxiv","version":3}},"canonical_sha256":"3ae9f8f859fe9f8e652733dd8ab8aa1796b31ccc0bd73c765143c0400ffc30ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ae9f8f859fe9f8e652733dd8ab8aa1796b31ccc0bd73c765143c0400ffc30ed","first_computed_at":"2026-05-18T03:55:23.574242Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:23.574242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EKAdm4BUYT1PqRcoxuTk4IRcod/3WW0SgciWXB+COj3dko3SbXGuXMBEL1LhD2VszQAiFiaR+i+9Tb3OyZiMBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:23.574988Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.3389","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93b56715e34ed530dbaccdb5b73ee0b4050c957eab09fdfcbe562a8e62ab1a09","sha256:a59da54254ff0bd459fc287fb3b51b5c2e9a76878b0824bfb5c2a6a221ae3b4d"],"state_sha256":"8fa93fffc616b3818ccae54b89db613890d213cb54220a76160ddf35df4611e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wt2oBHHbJy84R67ylPXUJ4k8dch5r8zskkF2j+tsE3wGaW1PlUWg+BmgGCA6vGGPnpmilRhfURzCy1nk7d6gBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:00:43.978238Z","bundle_sha256":"b0c8eb9455eb791656e78380fd72f9c5487c81a4818f10025f29b08fbe3b93c0"}}