{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:2RFRXM7NBLMZARTKYX627U5LWS","short_pith_number":"pith:2RFRXM7N","canonical_record":{"source":{"id":"hep-th/0607072","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2006-07-11T19:18:47Z","cross_cats_sorted":["gr-qc","physics.optics"],"title_canon_sha256":"2826b1230eb3d1766e3de83ebf029ebb38925d2ed07cd376c3b6fc6bda29e0b1","abstract_canon_sha256":"ce5408f1437e794055bb1d1948457244053b18893ddfe4d3cdd86ee781056672"},"schema_version":"1.0"},"canonical_sha256":"d44b1bb3ed0ad990466ac5fdafd3abb48b974befaa7d5a7fa43a0ac146de35b9","source":{"kind":"arxiv","id":"hep-th/0607072","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0607072","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0607072v2","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0607072","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"pith_short_12","alias_value":"2RFRXM7NBLMZ","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"2RFRXM7NBLMZARTK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"2RFRXM7N","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:2RFRXM7NBLMZARTKYX627U5LWS","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/0607072","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2006-07-11T19:18:47Z","cross_cats_sorted":["gr-qc","physics.optics"],"title_canon_sha256":"2826b1230eb3d1766e3de83ebf029ebb38925d2ed07cd376c3b6fc6bda29e0b1","abstract_canon_sha256":"ce5408f1437e794055bb1d1948457244053b18893ddfe4d3cdd86ee781056672"},"schema_version":"1.0"},"canonical_sha256":"d44b1bb3ed0ad990466ac5fdafd3abb48b974befaa7d5a7fa43a0ac146de35b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:54.654454Z","signature_b64":"tjnqS0/L4lKhgPvWX838jZugT8/3D0bNJPM4vs2WM8WRaanqtjuKJukCk2v4ywb7bLmhNa22TVhDfgg3aQPuDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d44b1bb3ed0ad990466ac5fdafd3abb48b974befaa7d5a7fa43a0ac146de35b9","last_reissued_at":"2026-05-18T04:17:54.653818Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:54.653818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/0607072","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":"2026-05-18T04:17:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PcWkyHqRMRr81hd6OFcIdw5CL7PbiZMpDW8cYkCI0VsVEwXybO3tfN3EUUW/0sLITlip4pb9pRma3J7IZ8K1Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T05:17:27.877477Z"},"content_sha256":"ecf35822d69e9ee260e061a3647fc9b036ab1c58b56f9c67853c99bfefc774d9","schema_version":"1.0","event_id":"sha256:ecf35822d69e9ee260e061a3647fc9b036ab1c58b56f9c67853c99bfefc774d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:2RFRXM7NBLMZARTKYX627U5LWS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic effects of background fields on Born-Infeld electromagnetic waves","license":"","headline":"","cross_cats":["gr-qc","physics.optics"],"primary_cat":"hep-th","authors_text":"Gabriel Bengochea, Matias Aiello, Rafael Ferraro","submitted_at":"2006-07-11T19:18:47Z","abstract_excerpt":"We show exact solutions of Born-Infeld theory for electromagnetic plane waves propagating in the presence of static background fields. The non-linear character of Born-Infeld equations generates an interaction between background and wave that changes the speed of propagation and adds a longitudinal component to the wave. As a consequence, in a magnetic background the ray direction differs from the propagation direction --a behavior resembling the one of a wave in an anisotropic medium--. This feature could open up a way to experimental tests of Born-Infeld theory."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0607072","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":"2026-05-18T04:17:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AdwCJ5vTGP9/rFys1yLFO7Mx6FLjxS/wMZ6uspoCm0+5y9wFtEUZJ8Xf1PtZx4ySQbBYWtAQtWfTWM/atEt4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T05:17:27.878092Z"},"content_sha256":"ec813963ed72707d40dce1ad442a9c739fb5b9e2dbb575d84261b9193c464448","schema_version":"1.0","event_id":"sha256:ec813963ed72707d40dce1ad442a9c739fb5b9e2dbb575d84261b9193c464448"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2RFRXM7NBLMZARTKYX627U5LWS/bundle.json","state_url":"https://pith.science/pith/2RFRXM7NBLMZARTKYX627U5LWS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2RFRXM7NBLMZARTKYX627U5LWS/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":"2026-06-12T05:17:27Z","links":{"resolver":"https://pith.science/pith/2RFRXM7NBLMZARTKYX627U5LWS","bundle":"https://pith.science/pith/2RFRXM7NBLMZARTKYX627U5LWS/bundle.json","state":"https://pith.science/pith/2RFRXM7NBLMZARTKYX627U5LWS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2RFRXM7NBLMZARTKYX627U5LWS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:2RFRXM7NBLMZARTKYX627U5LWS","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":"ce5408f1437e794055bb1d1948457244053b18893ddfe4d3cdd86ee781056672","cross_cats_sorted":["gr-qc","physics.optics"],"license":"","primary_cat":"hep-th","submitted_at":"2006-07-11T19:18:47Z","title_canon_sha256":"2826b1230eb3d1766e3de83ebf029ebb38925d2ed07cd376c3b6fc6bda29e0b1"},"schema_version":"1.0","source":{"id":"hep-th/0607072","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0607072","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0607072v2","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0607072","created_at":"2026-05-18T04:17:54Z"},{"alias_kind":"pith_short_12","alias_value":"2RFRXM7NBLMZ","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"2RFRXM7NBLMZARTK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"2RFRXM7N","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:ec813963ed72707d40dce1ad442a9c739fb5b9e2dbb575d84261b9193c464448","target":"graph","created_at":"2026-05-18T04:17:54Z","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 show exact solutions of Born-Infeld theory for electromagnetic plane waves propagating in the presence of static background fields. The non-linear character of Born-Infeld equations generates an interaction between background and wave that changes the speed of propagation and adds a longitudinal component to the wave. As a consequence, in a magnetic background the ray direction differs from the propagation direction --a behavior resembling the one of a wave in an anisotropic medium--. This feature could open up a way to experimental tests of Born-Infeld theory.","authors_text":"Gabriel Bengochea, Matias Aiello, Rafael Ferraro","cross_cats":["gr-qc","physics.optics"],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2006-07-11T19:18:47Z","title":"Anisotropic effects of background fields on Born-Infeld electromagnetic waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0607072","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:ecf35822d69e9ee260e061a3647fc9b036ab1c58b56f9c67853c99bfefc774d9","target":"record","created_at":"2026-05-18T04:17:54Z","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":"ce5408f1437e794055bb1d1948457244053b18893ddfe4d3cdd86ee781056672","cross_cats_sorted":["gr-qc","physics.optics"],"license":"","primary_cat":"hep-th","submitted_at":"2006-07-11T19:18:47Z","title_canon_sha256":"2826b1230eb3d1766e3de83ebf029ebb38925d2ed07cd376c3b6fc6bda29e0b1"},"schema_version":"1.0","source":{"id":"hep-th/0607072","kind":"arxiv","version":2}},"canonical_sha256":"d44b1bb3ed0ad990466ac5fdafd3abb48b974befaa7d5a7fa43a0ac146de35b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d44b1bb3ed0ad990466ac5fdafd3abb48b974befaa7d5a7fa43a0ac146de35b9","first_computed_at":"2026-05-18T04:17:54.653818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:54.653818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tjnqS0/L4lKhgPvWX838jZugT8/3D0bNJPM4vs2WM8WRaanqtjuKJukCk2v4ywb7bLmhNa22TVhDfgg3aQPuDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:54.654454Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0607072","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecf35822d69e9ee260e061a3647fc9b036ab1c58b56f9c67853c99bfefc774d9","sha256:ec813963ed72707d40dce1ad442a9c739fb5b9e2dbb575d84261b9193c464448"],"state_sha256":"78358c9e61dc463578b137f864f79082dda14057459c442484d5dd0581b80a10"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ea2o/yCaS+md7EydklT1u0dp9Q8/kN9TNy9ym9oJ5R+PurZtRPxrvsA85wqiENtwNVnd4dxGbZzaMWE3emPnAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T05:17:27.881560Z","bundle_sha256":"4bddb13a24a765dcc32ad020a0a3e459dbb819a725066c040e3548f79092bcbd"}}