{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:V62QZPLTDZY2OL7XUQPWUIUP66","short_pith_number":"pith:V62QZPLT","canonical_record":{"source":{"id":"1503.00235","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-01T08:20:27Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"407992ec9e85e69e93d2d2ef731007e679d790c6b1781a9078b10579916ca905","abstract_canon_sha256":"217e833fef6d0c936a900290fd4c9e89603f39720d4e1811c72b2993aea77f5f"},"schema_version":"1.0"},"canonical_sha256":"afb50cbd731e71a72ff7a41f6a228ff78156ce71829fd817fda061ca49851f42","source":{"kind":"arxiv","id":"1503.00235","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00235","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00235v1","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00235","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"pith_short_12","alias_value":"V62QZPLTDZY2","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V62QZPLTDZY2OL7X","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V62QZPLT","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:V62QZPLTDZY2OL7XUQPWUIUP66","target":"record","payload":{"canonical_record":{"source":{"id":"1503.00235","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-01T08:20:27Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"407992ec9e85e69e93d2d2ef731007e679d790c6b1781a9078b10579916ca905","abstract_canon_sha256":"217e833fef6d0c936a900290fd4c9e89603f39720d4e1811c72b2993aea77f5f"},"schema_version":"1.0"},"canonical_sha256":"afb50cbd731e71a72ff7a41f6a228ff78156ce71829fd817fda061ca49851f42","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:43.336729Z","signature_b64":"8Iv6lIoGPsJzqam19nPtU+g2Gh6cwqJK6gLisiG+rpUVE3bRkP3pzAWjS0krpfHGNcReXPJ/3H/UhB+s3UHnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afb50cbd731e71a72ff7a41f6a228ff78156ce71829fd817fda061ca49851f42","last_reissued_at":"2026-05-18T00:48:43.336236Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:43.336236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.00235","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":"2026-05-18T00:48:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jn/k0omQElhjUn9b/zA1NgHD6jKRBMIb2/nijaMETgqWVTaklQZl19G6Rt4Oj46Lw8eMql5dZuz+cnAvJsIKDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:54:48.286947Z"},"content_sha256":"c3d60dd2432be6557c3531cbbd5af68626af6dff19c56f0e217fa8933af3b53c","schema_version":"1.0","event_id":"sha256:c3d60dd2432be6557c3531cbbd5af68626af6dff19c56f0e217fa8933af3b53c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:V62QZPLTDZY2OL7XUQPWUIUP66","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromagnetic Scattering by Spheres of Topological Insulators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.optics","authors_text":"Dezhuan Han, Jian Zi, Lixin Ge","submitted_at":"2015-03-01T08:20:27Z","abstract_excerpt":"The electromagnetic scattering properties of topological insulator (TI) spheres are systematically studied in this paper. Unconventional backward scattering caused by the topological magneto-electric (TME) effect of TIs are found in both Rayleigh and Mie scattering regimes. This enhanced backward scattering can be achieved by introducing an impedance-matched background which can suppress the bulk scattering. For the cross-polarized scattering coefficients, interesting antiresonances are found in the Mie scattering regime, wherein the cross-polarized electromagnetic fields induced by the TME ef"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00235","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":"2026-05-18T00:48:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NRNxBky9BjANDEQrXAfgCnW7e5L+7djo6X6CfW0bsf9L9QrAu2dfkHecrfeieEUrNISR/Sun9PR5QZ2pvp4HCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:54:48.287338Z"},"content_sha256":"24c452f01f9bb68dfdb7e98220e707d2f6fa5f2b3ffd1677a9c827d48f93bd52","schema_version":"1.0","event_id":"sha256:24c452f01f9bb68dfdb7e98220e707d2f6fa5f2b3ffd1677a9c827d48f93bd52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V62QZPLTDZY2OL7XUQPWUIUP66/bundle.json","state_url":"https://pith.science/pith/V62QZPLTDZY2OL7XUQPWUIUP66/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V62QZPLTDZY2OL7XUQPWUIUP66/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":"2026-05-26T21:54:48Z","links":{"resolver":"https://pith.science/pith/V62QZPLTDZY2OL7XUQPWUIUP66","bundle":"https://pith.science/pith/V62QZPLTDZY2OL7XUQPWUIUP66/bundle.json","state":"https://pith.science/pith/V62QZPLTDZY2OL7XUQPWUIUP66/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V62QZPLTDZY2OL7XUQPWUIUP66/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:V62QZPLTDZY2OL7XUQPWUIUP66","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":"217e833fef6d0c936a900290fd4c9e89603f39720d4e1811c72b2993aea77f5f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-01T08:20:27Z","title_canon_sha256":"407992ec9e85e69e93d2d2ef731007e679d790c6b1781a9078b10579916ca905"},"schema_version":"1.0","source":{"id":"1503.00235","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00235","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00235v1","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00235","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"pith_short_12","alias_value":"V62QZPLTDZY2","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V62QZPLTDZY2OL7X","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V62QZPLT","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:24c452f01f9bb68dfdb7e98220e707d2f6fa5f2b3ffd1677a9c827d48f93bd52","target":"graph","created_at":"2026-05-18T00:48:43Z","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":"The electromagnetic scattering properties of topological insulator (TI) spheres are systematically studied in this paper. Unconventional backward scattering caused by the topological magneto-electric (TME) effect of TIs are found in both Rayleigh and Mie scattering regimes. This enhanced backward scattering can be achieved by introducing an impedance-matched background which can suppress the bulk scattering. For the cross-polarized scattering coefficients, interesting antiresonances are found in the Mie scattering regime, wherein the cross-polarized electromagnetic fields induced by the TME ef","authors_text":"Dezhuan Han, Jian Zi, Lixin Ge","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-01T08:20:27Z","title":"Electromagnetic Scattering by Spheres of Topological Insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00235","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:c3d60dd2432be6557c3531cbbd5af68626af6dff19c56f0e217fa8933af3b53c","target":"record","created_at":"2026-05-18T00:48:43Z","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":"217e833fef6d0c936a900290fd4c9e89603f39720d4e1811c72b2993aea77f5f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-03-01T08:20:27Z","title_canon_sha256":"407992ec9e85e69e93d2d2ef731007e679d790c6b1781a9078b10579916ca905"},"schema_version":"1.0","source":{"id":"1503.00235","kind":"arxiv","version":1}},"canonical_sha256":"afb50cbd731e71a72ff7a41f6a228ff78156ce71829fd817fda061ca49851f42","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"afb50cbd731e71a72ff7a41f6a228ff78156ce71829fd817fda061ca49851f42","first_computed_at":"2026-05-18T00:48:43.336236Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:43.336236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Iv6lIoGPsJzqam19nPtU+g2Gh6cwqJK6gLisiG+rpUVE3bRkP3pzAWjS0krpfHGNcReXPJ/3H/UhB+s3UHnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:43.336729Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.00235","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c3d60dd2432be6557c3531cbbd5af68626af6dff19c56f0e217fa8933af3b53c","sha256:24c452f01f9bb68dfdb7e98220e707d2f6fa5f2b3ffd1677a9c827d48f93bd52"],"state_sha256":"400486f7bfcdb0e96f898dfad7e5c3b27bfe8a127d620fa637047c61add0ed8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LoOufXvxeEGQLztSGxfWvoGuoID9LgqPdmqRLpfX4SClry/fzESYKrulOUWZG7tybFkBjPOhFsbhKm0TBwGuDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:54:48.290793Z","bundle_sha256":"1760008e71f4b9fffe967864bb751d1a0ef7d731703da5456d5380b2cec04ee7"}}