{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TTXGQTCXZ5DU7IG7S3XNJHRNJR","short_pith_number":"pith:TTXGQTCX","canonical_record":{"source":{"id":"1305.5857","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-24T20:47:45Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"6553d3d437bff534e260b490b29662cbf7c8601c0b4a3202ded458aae16c67c7","abstract_canon_sha256":"00bb80eb378c6eff77ae37ee018a053b83687183244385ddfc526741c1c842b3"},"schema_version":"1.0"},"canonical_sha256":"9cee684c57cf474fa0df96eed49e2d4c428b644e048bcbaf75eed317b2010df5","source":{"kind":"arxiv","id":"1305.5857","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5857","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5857v2","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5857","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"pith_short_12","alias_value":"TTXGQTCXZ5DU","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TTXGQTCXZ5DU7IG7","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TTXGQTCX","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TTXGQTCXZ5DU7IG7S3XNJHRNJR","target":"record","payload":{"canonical_record":{"source":{"id":"1305.5857","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-24T20:47:45Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"6553d3d437bff534e260b490b29662cbf7c8601c0b4a3202ded458aae16c67c7","abstract_canon_sha256":"00bb80eb378c6eff77ae37ee018a053b83687183244385ddfc526741c1c842b3"},"schema_version":"1.0"},"canonical_sha256":"9cee684c57cf474fa0df96eed49e2d4c428b644e048bcbaf75eed317b2010df5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:35.916426Z","signature_b64":"tdcbTsGtVe5Ott4lZExnejHx7JxFFNDshh+xwhCYDKQ6ESAtBurSFweK+JGOGh309AsoarGwNFjxDWobJqyuBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9cee684c57cf474fa0df96eed49e2d4c428b644e048bcbaf75eed317b2010df5","last_reissued_at":"2026-05-18T03:17:35.915769Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:35.915769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.5857","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":"2026-05-18T03:17:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EdTEhsp2xt2T36+Gq3+EYDBAe3zYWvSNHid3dX5C0zs6UFqGSo6YQIO0jqDS59lexuo3vawR1doIBfCpVyJkBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T06:36:50.401523Z"},"content_sha256":"d07ea266b247b3f04b06f405308cab0b60884fcdd799d4a4acf335a6c39e19cb","schema_version":"1.0","event_id":"sha256:d07ea266b247b3f04b06f405308cab0b60884fcdd799d4a4acf335a6c39e19cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TTXGQTCXZ5DU7IG7S3XNJHRNJR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metamaterial Van Hove Singularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.optics","authors_text":"C.L. Cortes, Z. Jacob","submitted_at":"2013-05-24T20:47:45Z","abstract_excerpt":"We introduce the photonic analogue of electronic Van Hove singularities (VHS) in artificial media (metamaterials) with hyperbolic dispersion. Unlike photonic and electronic crystals, the VHS in metamaterials is unrelated to the underlying periodicity and occurs due to slow light modes in the structure. We show that the VHS characteristics are manifested in the near-field local density of optical states in spite of the losses, dispersion and finite unit cell size of the hyperbolic metamaterial. Finally we show that this work should lead to quantum, thermal, nano-lasing and biosensing applicatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5857","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":""},"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":"2026-05-18T03:17:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7YCUMT1QDzLUdgXAmagWExlMuyCR8fGz58ACZB+ATNueKzr9P/rNImgt7mGGVcHOlMrFN6Tmaiig2fModbGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T06:36:50.401882Z"},"content_sha256":"4e3e93e1aae5bfbff9cad1afa274a755fb42625edc0d5d94ae62da2b65b7ff76","schema_version":"1.0","event_id":"sha256:4e3e93e1aae5bfbff9cad1afa274a755fb42625edc0d5d94ae62da2b65b7ff76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/bundle.json","state_url":"https://pith.science/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/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":"2026-07-04T06:36:50Z","links":{"resolver":"https://pith.science/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR","bundle":"https://pith.science/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/bundle.json","state":"https://pith.science/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TTXGQTCXZ5DU7IG7S3XNJHRNJR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TTXGQTCXZ5DU7IG7S3XNJHRNJR","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":"00bb80eb378c6eff77ae37ee018a053b83687183244385ddfc526741c1c842b3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-24T20:47:45Z","title_canon_sha256":"6553d3d437bff534e260b490b29662cbf7c8601c0b4a3202ded458aae16c67c7"},"schema_version":"1.0","source":{"id":"1305.5857","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5857","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5857v2","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5857","created_at":"2026-05-18T03:17:35Z"},{"alias_kind":"pith_short_12","alias_value":"TTXGQTCXZ5DU","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TTXGQTCXZ5DU7IG7","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TTXGQTCX","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:4e3e93e1aae5bfbff9cad1afa274a755fb42625edc0d5d94ae62da2b65b7ff76","target":"graph","created_at":"2026-05-18T03:17:35Z","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 the photonic analogue of electronic Van Hove singularities (VHS) in artificial media (metamaterials) with hyperbolic dispersion. Unlike photonic and electronic crystals, the VHS in metamaterials is unrelated to the underlying periodicity and occurs due to slow light modes in the structure. We show that the VHS characteristics are manifested in the near-field local density of optical states in spite of the losses, dispersion and finite unit cell size of the hyperbolic metamaterial. Finally we show that this work should lead to quantum, thermal, nano-lasing and biosensing applicatio","authors_text":"C.L. Cortes, Z. Jacob","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-24T20:47:45Z","title":"Metamaterial Van Hove Singularity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5857","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:d07ea266b247b3f04b06f405308cab0b60884fcdd799d4a4acf335a6c39e19cb","target":"record","created_at":"2026-05-18T03:17:35Z","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":"00bb80eb378c6eff77ae37ee018a053b83687183244385ddfc526741c1c842b3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-05-24T20:47:45Z","title_canon_sha256":"6553d3d437bff534e260b490b29662cbf7c8601c0b4a3202ded458aae16c67c7"},"schema_version":"1.0","source":{"id":"1305.5857","kind":"arxiv","version":2}},"canonical_sha256":"9cee684c57cf474fa0df96eed49e2d4c428b644e048bcbaf75eed317b2010df5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cee684c57cf474fa0df96eed49e2d4c428b644e048bcbaf75eed317b2010df5","first_computed_at":"2026-05-18T03:17:35.915769Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:35.915769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tdcbTsGtVe5Ott4lZExnejHx7JxFFNDshh+xwhCYDKQ6ESAtBurSFweK+JGOGh309AsoarGwNFjxDWobJqyuBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:35.916426Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.5857","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d07ea266b247b3f04b06f405308cab0b60884fcdd799d4a4acf335a6c39e19cb","sha256:4e3e93e1aae5bfbff9cad1afa274a755fb42625edc0d5d94ae62da2b65b7ff76"],"state_sha256":"b3f4c0374cd55b56abfe79c225f9b7f741985c436a2cc95fe5d86d8d4258978d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NRcmOSo+PffpOdHn5KA9pPVzWPO3BgjMiZSVFrZR1bpDNQBKZCpYJgKHQua6aZEmyoJuIdYLDMFxwBCM9XUOBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T06:36:50.403971Z","bundle_sha256":"64e496fe0aa256827a1ba455ec6d065179bc322062cfd03f384140202db0ebb9"}}