{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:DBVN6N6GV6X5JCLDBN6UWEX2NT","short_pith_number":"pith:DBVN6N6G","canonical_record":{"source":{"id":"1501.02060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-01-09T07:51:05Z","cross_cats_sorted":[],"title_canon_sha256":"e20751f8c23a7ab7c84fcfe459dbbc5a4e0bca55710b95967b31906e26b1f242","abstract_canon_sha256":"3d76f51c7d712d10fb8547c103aa9f2b9285d6f537ccb9bc63dc7a3f0b9d5a06"},"schema_version":"1.0"},"canonical_sha256":"186adf37c6afafd489630b7d4b12fa6cdd42f585ab393c2d64ce63a5cb6b2c94","source":{"kind":"arxiv","id":"1501.02060","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02060","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02060v1","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02060","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"pith_short_12","alias_value":"DBVN6N6GV6X5","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DBVN6N6GV6X5JCLD","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DBVN6N6G","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:DBVN6N6GV6X5JCLDBN6UWEX2NT","target":"record","payload":{"canonical_record":{"source":{"id":"1501.02060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-01-09T07:51:05Z","cross_cats_sorted":[],"title_canon_sha256":"e20751f8c23a7ab7c84fcfe459dbbc5a4e0bca55710b95967b31906e26b1f242","abstract_canon_sha256":"3d76f51c7d712d10fb8547c103aa9f2b9285d6f537ccb9bc63dc7a3f0b9d5a06"},"schema_version":"1.0"},"canonical_sha256":"186adf37c6afafd489630b7d4b12fa6cdd42f585ab393c2d64ce63a5cb6b2c94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:44.906326Z","signature_b64":"CHjqD/u6hDOABMtZAreyy3zyEksDkakljI8vdTDa2E0xND7n4eDA3sv+/k617KtcFJvMg0JRmT2wD5xmMCD7AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"186adf37c6afafd489630b7d4b12fa6cdd42f585ab393c2d64ce63a5cb6b2c94","last_reissued_at":"2026-05-18T02:29:44.905903Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:44.905903Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.02060","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":"2026-05-18T02:29:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"inHNAYRKkeG9Pq1qVo6yPXOSQSV5tMQ3eyvZlinjw8ANhg1PpmcvoAxn+B0PzFXPv6A3MVTHQszXa3NvvUyYDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T15:35:06.409304Z"},"content_sha256":"7552b761fe8503b826699b980317ab91381f4ee4be2e2dfd40954ff991be25fd","schema_version":"1.0","event_id":"sha256:7552b761fe8503b826699b980317ab91381f4ee4be2e2dfd40954ff991be25fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:DBVN6N6GV6X5JCLDBN6UWEX2NT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Light scattering in pseudo-passive media with uniformly balanced gain and loss","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A. Basiri, I. Vitebskiy, T. Kottos","submitted_at":"2015-01-09T07:51:05Z","abstract_excerpt":"We introduce a class of metamaterials with uniformly balanced gain and loss associated with complex permittivity and permeability constants. The refractive index of such a balanced pseudo-passive metamaterial is real. An unbounded uniform pseudo-passive medium has transport characteristics similar to those of its truly passive and lossless counterpart with the same real refractive index. However, bounded pseudo-passive samples show some unexpected scattering features which can be further emphasized by including such elements in a photonic structure."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02060","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":""},"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":"2026-05-18T02:29:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UWk+urz3Xb+NzrIszUdyNrP5Rn+zVb6uBZrCMJmANGkJ8hE0SxMhLZmHiVhfWWivrHuVpA0uAzjZNixymV25Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T15:35:06.409663Z"},"content_sha256":"2ddba2e14ae2cb8a2779c844b50ad2aee5b16d3ef6a268edca5cdfa0362280d0","schema_version":"1.0","event_id":"sha256:2ddba2e14ae2cb8a2779c844b50ad2aee5b16d3ef6a268edca5cdfa0362280d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/bundle.json","state_url":"https://pith.science/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/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":"2026-06-23T15:35:06Z","links":{"resolver":"https://pith.science/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT","bundle":"https://pith.science/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/bundle.json","state":"https://pith.science/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DBVN6N6GV6X5JCLDBN6UWEX2NT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DBVN6N6GV6X5JCLDBN6UWEX2NT","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":"3d76f51c7d712d10fb8547c103aa9f2b9285d6f537ccb9bc63dc7a3f0b9d5a06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-01-09T07:51:05Z","title_canon_sha256":"e20751f8c23a7ab7c84fcfe459dbbc5a4e0bca55710b95967b31906e26b1f242"},"schema_version":"1.0","source":{"id":"1501.02060","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02060","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02060v1","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02060","created_at":"2026-05-18T02:29:44Z"},{"alias_kind":"pith_short_12","alias_value":"DBVN6N6GV6X5","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DBVN6N6GV6X5JCLD","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DBVN6N6G","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:2ddba2e14ae2cb8a2779c844b50ad2aee5b16d3ef6a268edca5cdfa0362280d0","target":"graph","created_at":"2026-05-18T02:29:44Z","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 introduce a class of metamaterials with uniformly balanced gain and loss associated with complex permittivity and permeability constants. The refractive index of such a balanced pseudo-passive metamaterial is real. An unbounded uniform pseudo-passive medium has transport characteristics similar to those of its truly passive and lossless counterpart with the same real refractive index. However, bounded pseudo-passive samples show some unexpected scattering features which can be further emphasized by including such elements in a photonic structure.","authors_text":"A. Basiri, I. Vitebskiy, T. Kottos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-01-09T07:51:05Z","title":"Light scattering in pseudo-passive media with uniformly balanced gain and loss"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02060","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":"sha256:7552b761fe8503b826699b980317ab91381f4ee4be2e2dfd40954ff991be25fd","target":"record","created_at":"2026-05-18T02:29:44Z","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":"3d76f51c7d712d10fb8547c103aa9f2b9285d6f537ccb9bc63dc7a3f0b9d5a06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-01-09T07:51:05Z","title_canon_sha256":"e20751f8c23a7ab7c84fcfe459dbbc5a4e0bca55710b95967b31906e26b1f242"},"schema_version":"1.0","source":{"id":"1501.02060","kind":"arxiv","version":1}},"canonical_sha256":"186adf37c6afafd489630b7d4b12fa6cdd42f585ab393c2d64ce63a5cb6b2c94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"186adf37c6afafd489630b7d4b12fa6cdd42f585ab393c2d64ce63a5cb6b2c94","first_computed_at":"2026-05-18T02:29:44.905903Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:44.905903Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CHjqD/u6hDOABMtZAreyy3zyEksDkakljI8vdTDa2E0xND7n4eDA3sv+/k617KtcFJvMg0JRmT2wD5xmMCD7AA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:44.906326Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.02060","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7552b761fe8503b826699b980317ab91381f4ee4be2e2dfd40954ff991be25fd","sha256:2ddba2e14ae2cb8a2779c844b50ad2aee5b16d3ef6a268edca5cdfa0362280d0"],"state_sha256":"e95d4ee73f25aa4a813692944a1e412907e20e32b9f950802033b7d47911014c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RHvut+Nc/hfN5vk5ALiOrYomIOeKijr9x7Wvxf99TNlDjBQRKelJIs2fQ92DMbNy9SvggC13fC9E7PvViQjRBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T15:35:06.411633Z","bundle_sha256":"087dddd225a0b2905619e30b75179e959bd1d95ae63e033b549ab7bb65b0f306"}}