{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:YTPG6QNXYEOGDIYNKZAJCXGWXJ","short_pith_number":"pith:YTPG6QNX","canonical_record":{"source":{"id":"1104.1500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-08T07:13:20Z","cross_cats_sorted":[],"title_canon_sha256":"6fe3f5680d4c01134220e81a5b0083bd202cc0af543ddb4fe401479d744c8965","abstract_canon_sha256":"6d28d2e4a854438ab993dacb512380d3272d6d9d952af4a91ac509ebb72dcf1f"},"schema_version":"1.0"},"canonical_sha256":"c4de6f41b7c11c61a30d5640915cd6ba623be18cf2f40a2d0ce73e260ddca115","source":{"kind":"arxiv","id":"1104.1500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1500","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1500v1","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1500","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"YTPG6QNXYEOG","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YTPG6QNXYEOGDIYN","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YTPG6QNX","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:YTPG6QNXYEOGDIYNKZAJCXGWXJ","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-08T07:13:20Z","cross_cats_sorted":[],"title_canon_sha256":"6fe3f5680d4c01134220e81a5b0083bd202cc0af543ddb4fe401479d744c8965","abstract_canon_sha256":"6d28d2e4a854438ab993dacb512380d3272d6d9d952af4a91ac509ebb72dcf1f"},"schema_version":"1.0"},"canonical_sha256":"c4de6f41b7c11c61a30d5640915cd6ba623be18cf2f40a2d0ce73e260ddca115","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:22:10.375451Z","signature_b64":"cce27X9lYrlHAARHUS0oc+6z6fkMRr8pgreUVvs27R2n34bX08QtogxQYIR/MhmeLCJpyIgngNWiU37WOEJfAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4de6f41b7c11c61a30d5640915cd6ba623be18cf2f40a2d0ce73e260ddca115","last_reissued_at":"2026-05-18T02:22:10.374971Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:22:10.374971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1500","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":"2026-05-18T02:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"adfnL+VHheL5HQUUPK/GW7KhRYTRxSdIoXrncRvCVYWByPg9kmIXsDUlqcyAadAfeLQJacAVq64KxR3awYQjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:28:56.848504Z"},"content_sha256":"617eee8752ca711de8ef0a1e9e5716c35cb5e22a42dbb94cb91d1de520453da8","schema_version":"1.0","event_id":"sha256:617eee8752ca711de8ef0a1e9e5716c35cb5e22a42dbb94cb91d1de520453da8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:YTPG6QNXYEOGDIYNKZAJCXGWXJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Casimir forces in multilayer magnetodielectrics with both gain and loss","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ehsan Amooghorban, Fardin Kheirandish, Martijn Wubs, N. Asger Mortensen","submitted_at":"2011-04-08T07:13:20Z","abstract_excerpt":"A path-integral approach to the quantization of the electromagnetic field in a linearly amplifying magnetodielectric medium is presented. Two continua of inverted harmonic oscillators are used to describe the polarizability and magnetizability of the amplifying medium. The causal susceptibilities of the amplifying medium, with negative imaginary parts in finite frequency intervals, are identified and their relation to microscopic coupling functions are determined. By carefully relating the two-point functions of the field theory to the optical Green functions, we calculate the Casimir energy a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1500","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":"2026-05-18T02:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K44sGvb0Ua/CiBK7fQM9KOtSWygUqzr05Fbxf9zaEfxnxi0bOzhoeO0MVlpIMmFySuKbQStVoJAcJZzrg/KnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:28:56.848848Z"},"content_sha256":"f4378532b40d2a406079caba66744e5fc22893365eaad2ec491d4d39ee0a368a","schema_version":"1.0","event_id":"sha256:f4378532b40d2a406079caba66744e5fc22893365eaad2ec491d4d39ee0a368a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/bundle.json","state_url":"https://pith.science/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/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":"2026-06-02T08:28:56Z","links":{"resolver":"https://pith.science/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ","bundle":"https://pith.science/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/bundle.json","state":"https://pith.science/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YTPG6QNXYEOGDIYNKZAJCXGWXJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:YTPG6QNXYEOGDIYNKZAJCXGWXJ","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":"6d28d2e4a854438ab993dacb512380d3272d6d9d952af4a91ac509ebb72dcf1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-08T07:13:20Z","title_canon_sha256":"6fe3f5680d4c01134220e81a5b0083bd202cc0af543ddb4fe401479d744c8965"},"schema_version":"1.0","source":{"id":"1104.1500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1500","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1500v1","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1500","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"YTPG6QNXYEOG","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YTPG6QNXYEOGDIYN","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YTPG6QNX","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:f4378532b40d2a406079caba66744e5fc22893365eaad2ec491d4d39ee0a368a","target":"graph","created_at":"2026-05-18T02:22:10Z","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":"A path-integral approach to the quantization of the electromagnetic field in a linearly amplifying magnetodielectric medium is presented. Two continua of inverted harmonic oscillators are used to describe the polarizability and magnetizability of the amplifying medium. The causal susceptibilities of the amplifying medium, with negative imaginary parts in finite frequency intervals, are identified and their relation to microscopic coupling functions are determined. By carefully relating the two-point functions of the field theory to the optical Green functions, we calculate the Casimir energy a","authors_text":"Ehsan Amooghorban, Fardin Kheirandish, Martijn Wubs, N. Asger Mortensen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-08T07:13:20Z","title":"Casimir forces in multilayer magnetodielectrics with both gain and loss"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1500","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":"sha256:617eee8752ca711de8ef0a1e9e5716c35cb5e22a42dbb94cb91d1de520453da8","target":"record","created_at":"2026-05-18T02:22:10Z","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":"6d28d2e4a854438ab993dacb512380d3272d6d9d952af4a91ac509ebb72dcf1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-04-08T07:13:20Z","title_canon_sha256":"6fe3f5680d4c01134220e81a5b0083bd202cc0af543ddb4fe401479d744c8965"},"schema_version":"1.0","source":{"id":"1104.1500","kind":"arxiv","version":1}},"canonical_sha256":"c4de6f41b7c11c61a30d5640915cd6ba623be18cf2f40a2d0ce73e260ddca115","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4de6f41b7c11c61a30d5640915cd6ba623be18cf2f40a2d0ce73e260ddca115","first_computed_at":"2026-05-18T02:22:10.374971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:22:10.374971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cce27X9lYrlHAARHUS0oc+6z6fkMRr8pgreUVvs27R2n34bX08QtogxQYIR/MhmeLCJpyIgngNWiU37WOEJfAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:22:10.375451Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:617eee8752ca711de8ef0a1e9e5716c35cb5e22a42dbb94cb91d1de520453da8","sha256:f4378532b40d2a406079caba66744e5fc22893365eaad2ec491d4d39ee0a368a"],"state_sha256":"ebaf6a58608d3a3c0c05d2e644351da6d886f130818a5784d0f657709cfc5e9a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PqfPNNy96Oa7NuY5mEnY+LfXbK0sQB6bhDanLm2FDBOlGtVGkGjN1waSE5/o/M03nXq9+59CGK4CX1HvFGxeAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T08:28:56.850810Z","bundle_sha256":"01dfdc9499ebed93733d8f595f047439f2dc30e95b553caf8b51465fc93a3608"}}