{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SBQV4K3VSFJYCUNCPNUDWDYKHB","short_pith_number":"pith:SBQV4K3V","canonical_record":{"source":{"id":"1702.00693","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-02T14:20:27Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"d9a7e5ff6d7affa71a4d84ba85ca008c1531ec58e94dd843e4d01cc4c96b8d65","abstract_canon_sha256":"2171b6e1e947be217c8f7451271a430d8b505b3ab4fd5e98e47ea9ec8c85d203"},"schema_version":"1.0"},"canonical_sha256":"90615e2b7591538151a27b683b0f0a385edeaab7a175773d3d04fbb75747605b","source":{"kind":"arxiv","id":"1702.00693","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.00693","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"arxiv_version","alias_value":"1702.00693v2","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00693","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"pith_short_12","alias_value":"SBQV4K3VSFJY","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SBQV4K3VSFJYCUNC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SBQV4K3V","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SBQV4K3VSFJYCUNCPNUDWDYKHB","target":"record","payload":{"canonical_record":{"source":{"id":"1702.00693","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-02T14:20:27Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"d9a7e5ff6d7affa71a4d84ba85ca008c1531ec58e94dd843e4d01cc4c96b8d65","abstract_canon_sha256":"2171b6e1e947be217c8f7451271a430d8b505b3ab4fd5e98e47ea9ec8c85d203"},"schema_version":"1.0"},"canonical_sha256":"90615e2b7591538151a27b683b0f0a385edeaab7a175773d3d04fbb75747605b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:07.122302Z","signature_b64":"JoTs6618pmvLR9AG/RCnDeY6hKRaTQW3ghezFW+NyC/aneT8QNaK2Jyu+WphvQJlfUAZAr0YZFr6cOoaKJl8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90615e2b7591538151a27b683b0f0a385edeaab7a175773d3d04fbb75747605b","last_reissued_at":"2026-05-18T00:42:07.121585Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:07.121585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.00693","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":"2026-05-18T00:42:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+7762a6GTgAQe0FD6PFw9TGsYMb26xZuB+a1HXQp/iA68SlsrBWoV7WOQijqybOURh24HGvQLjSayh4sOwSEBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T15:12:57.735597Z"},"content_sha256":"f284902cfb6964c9037ee36bf5cc4d3fef653343ac4acefd238c853a2871b346","schema_version":"1.0","event_id":"sha256:f284902cfb6964c9037ee36bf5cc4d3fef653343ac4acefd238c853a2871b346"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SBQV4K3VSFJYCUNCPNUDWDYKHB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analog cosmological particle generation in a superconducting circuit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"quant-ph","authors_text":"Andrzej Dragan, Jiliang Jing, Zehua Tian","submitted_at":"2017-02-02T14:20:27Z","abstract_excerpt":"We propose the use of a waveguidelike transmission line based on direct-current superconducting quantum interference devices (dc-SQUID) and demonstrate that the node flux in this transmission line behaves in the same way as quantum fields in an expanding (or contracting) universe. We show how to detect the analog cosmological particle generation and analyze its feasibility with current circuit quantum electrodynamics (cQED) technology. Our setup in principle paves a new way for the exploration of analogue quantum gravitational effects."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00693","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":"2026-05-18T00:42:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8HJdYVBVJbi5+uk6d6KzmdVxJrlKxwTs9IlRt6klGRjLfDwgFEqwNm7wCfCi4f0OdG441JzJNGt+zA40BRKYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T15:12:57.735953Z"},"content_sha256":"ed224940155db8f121f3ceb5d95bf4734bde4e29cbda709f2020b92b9eeafdbc","schema_version":"1.0","event_id":"sha256:ed224940155db8f121f3ceb5d95bf4734bde4e29cbda709f2020b92b9eeafdbc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/bundle.json","state_url":"https://pith.science/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/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":"2026-07-02T15:12:57Z","links":{"resolver":"https://pith.science/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB","bundle":"https://pith.science/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/bundle.json","state":"https://pith.science/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SBQV4K3VSFJYCUNCPNUDWDYKHB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SBQV4K3VSFJYCUNCPNUDWDYKHB","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":"2171b6e1e947be217c8f7451271a430d8b505b3ab4fd5e98e47ea9ec8c85d203","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-02T14:20:27Z","title_canon_sha256":"d9a7e5ff6d7affa71a4d84ba85ca008c1531ec58e94dd843e4d01cc4c96b8d65"},"schema_version":"1.0","source":{"id":"1702.00693","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.00693","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"arxiv_version","alias_value":"1702.00693v2","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00693","created_at":"2026-05-18T00:42:07Z"},{"alias_kind":"pith_short_12","alias_value":"SBQV4K3VSFJY","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SBQV4K3VSFJYCUNC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SBQV4K3V","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:ed224940155db8f121f3ceb5d95bf4734bde4e29cbda709f2020b92b9eeafdbc","target":"graph","created_at":"2026-05-18T00:42:07Z","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 propose the use of a waveguidelike transmission line based on direct-current superconducting quantum interference devices (dc-SQUID) and demonstrate that the node flux in this transmission line behaves in the same way as quantum fields in an expanding (or contracting) universe. We show how to detect the analog cosmological particle generation and analyze its feasibility with current circuit quantum electrodynamics (cQED) technology. Our setup in principle paves a new way for the exploration of analogue quantum gravitational effects.","authors_text":"Andrzej Dragan, Jiliang Jing, Zehua Tian","cross_cats":["gr-qc","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-02T14:20:27Z","title":"Analog cosmological particle generation in a superconducting circuit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00693","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:f284902cfb6964c9037ee36bf5cc4d3fef653343ac4acefd238c853a2871b346","target":"record","created_at":"2026-05-18T00:42:07Z","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":"2171b6e1e947be217c8f7451271a430d8b505b3ab4fd5e98e47ea9ec8c85d203","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-02T14:20:27Z","title_canon_sha256":"d9a7e5ff6d7affa71a4d84ba85ca008c1531ec58e94dd843e4d01cc4c96b8d65"},"schema_version":"1.0","source":{"id":"1702.00693","kind":"arxiv","version":2}},"canonical_sha256":"90615e2b7591538151a27b683b0f0a385edeaab7a175773d3d04fbb75747605b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90615e2b7591538151a27b683b0f0a385edeaab7a175773d3d04fbb75747605b","first_computed_at":"2026-05-18T00:42:07.121585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:07.121585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JoTs6618pmvLR9AG/RCnDeY6hKRaTQW3ghezFW+NyC/aneT8QNaK2Jyu+WphvQJlfUAZAr0YZFr6cOoaKJl8Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:07.122302Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.00693","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f284902cfb6964c9037ee36bf5cc4d3fef653343ac4acefd238c853a2871b346","sha256:ed224940155db8f121f3ceb5d95bf4734bde4e29cbda709f2020b92b9eeafdbc"],"state_sha256":"da75441d5265f001a1fd8dbc1d28e2a882fb503661a8458b08ad9d7423e6879f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cQApPBJ76+ykwnbGQPU0j4cf3ZIvmMyThr4iv5DJp2yKObFl50X7HY5lVcXaphqLTBPNEsvpgZmgeoOECJdCCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T15:12:57.737915Z","bundle_sha256":"21d5ffd2d709e27919bbd0d3e08c1c1d2577ef95549ef65bb0cebfdf091d1201"}}