{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WZWGU2QVC2VBCSDMXOU3BDS2FN","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":"123b70589497eff67dc36d84726a62ecfbeed0888c7fd94971fe44cea551a156","cross_cats_sorted":["gr-qc","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-30T15:16:20Z","title_canon_sha256":"d2f4cf18ef0fd2f2e0c60095761ab17321b6b11d9214c22f34cc992b1b32f6cc"},"schema_version":"1.0","source":{"id":"1401.7875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.7875","created_at":"2026-05-18T03:00:38Z"},{"alias_kind":"arxiv_version","alias_value":"1401.7875v1","created_at":"2026-05-18T03:00:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.7875","created_at":"2026-05-18T03:00:38Z"},{"alias_kind":"pith_short_12","alias_value":"WZWGU2QVC2VB","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WZWGU2QVC2VBCSDM","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WZWGU2QV","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:9361fb4ea33b9f8b13b27c280745f31f36f3e63c90730c4fc6501a8778572e4b","target":"graph","created_at":"2026-05-18T03:00:38Z","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":"When one of the parameters in the Euler-Lagrange equations of motion of a system is modulated, particles can be generated out of the quantum vacuum. This phenomenon is known as the dynamical Casimir effect, and it was recently realized experimentally in systems of superconducting circuits, for example by using modulated resonators made of coplanar waveguides, or arrays of superconducting quantum intereference devices (SQUIDs) forming a Josephson metamaterial. In this paper, we consider a simple electrical circuit model for dynamical Casimir effects, consisting of an LC resonator, with the indu","authors_text":"G. S. Paraoanu, J. Hassel, P. J. Hakonen, P. L\\\"ahteenm\\\"aki","cross_cats":["gr-qc","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-30T15:16:20Z","title":"Photon Generation from Quantum Vacuum using a Josephson Metamaterial"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.7875","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:d894a596e403b9fc004bf042ec2d8cef59b8ecf92f9d9c7812bf02ffddf4bb34","target":"record","created_at":"2026-05-18T03:00:38Z","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":"123b70589497eff67dc36d84726a62ecfbeed0888c7fd94971fe44cea551a156","cross_cats_sorted":["gr-qc","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-30T15:16:20Z","title_canon_sha256":"d2f4cf18ef0fd2f2e0c60095761ab17321b6b11d9214c22f34cc992b1b32f6cc"},"schema_version":"1.0","source":{"id":"1401.7875","kind":"arxiv","version":1}},"canonical_sha256":"b66c6a6a1516aa11486cbba9b08e5a2b6bd69017dc740b8876f406cbabce349f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b66c6a6a1516aa11486cbba9b08e5a2b6bd69017dc740b8876f406cbabce349f","first_computed_at":"2026-05-18T03:00:38.093572Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:38.093572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+lQI/kXixIYqdODbIQBs3nCfCzdIduNS/jN+4bsT9eb2sP4lr4hf5C0t51N7yHvOPLLsw2VWmHwyW9PB7s51Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:38.094476Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.7875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d894a596e403b9fc004bf042ec2d8cef59b8ecf92f9d9c7812bf02ffddf4bb34","sha256:9361fb4ea33b9f8b13b27c280745f31f36f3e63c90730c4fc6501a8778572e4b"],"state_sha256":"59c556a48a3eb526ee00bcb8e6177551042115e538c368e44b2a049d0aea0962"}