{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:WMR5Y3DSMBEYRHIOQO56O4QRAH","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":"968a063530d19e2fecdacdc27c5cc309d3a272e64247dd18ca5f7ef36ae6e109","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-06-28T18:05:50Z","title_canon_sha256":"0082de24f46fe5174bfd605afc1ae2308273a5c960f0e2d049a54c5ba2f66114"},"schema_version":"1.0","source":{"id":"2106.14923","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.14923","created_at":"2026-07-05T03:28:20Z"},{"alias_kind":"arxiv_version","alias_value":"2106.14923v2","created_at":"2026-07-05T03:28:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.14923","created_at":"2026-07-05T03:28:20Z"},{"alias_kind":"pith_short_12","alias_value":"WMR5Y3DSMBEY","created_at":"2026-07-05T03:28:20Z"},{"alias_kind":"pith_short_16","alias_value":"WMR5Y3DSMBEYRHIO","created_at":"2026-07-05T03:28:20Z"},{"alias_kind":"pith_short_8","alias_value":"WMR5Y3DS","created_at":"2026-07-05T03:28:20Z"}],"graph_snapshots":[{"event_id":"sha256:571e449413ddbe10c22570460c6be8a102d7101cf121c4fd537ff472dac70a67","target":"graph","created_at":"2026-07-05T03:28:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2106.14923/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a method for computing the Bogoliubov transformation experienced by a confined quantum scalar field in a globally hyperbolic spacetime, due to the changes in the geometry and/or the confining boundaries. The method constructs a basis of solutions to the Klein-Gordon equation associated to each compact Cauchy hypersurface of constant time. It then provides a differential equation for the linear transformation between bases at different times. The transformation can be interpreted physically as a Bogoliubov transformation when it connects two regions in which a time symmetry allows fo","authors_text":"Ana L. B\\'aez-Camargo, Ivette Fuentes, Luis C. Barbado","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-06-28T18:05:50Z","title":"Evolution of confined quantum scalar fields in curved spacetime. Part II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.14923","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:c39f6d66f93162508b409aeaaf01580fe35bedd9ca03f77083332c0df3565e1d","target":"record","created_at":"2026-07-05T03:28:20Z","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":"968a063530d19e2fecdacdc27c5cc309d3a272e64247dd18ca5f7ef36ae6e109","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-06-28T18:05:50Z","title_canon_sha256":"0082de24f46fe5174bfd605afc1ae2308273a5c960f0e2d049a54c5ba2f66114"},"schema_version":"1.0","source":{"id":"2106.14923","kind":"arxiv","version":2}},"canonical_sha256":"b323dc6c726049889d0e83bbe7721101e8a162426c8aca89f61e842e36e5e938","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b323dc6c726049889d0e83bbe7721101e8a162426c8aca89f61e842e36e5e938","first_computed_at":"2026-07-05T03:28:20.033746Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:28:20.033746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2HdqFL+M76pWwob1HQECsElc6mI8klUMXMx7u5O6VNXre8z2BBHOuMU75uWZab+XTP2oK68wLEaN0cYAEFRwCw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:28:20.034189Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.14923","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c39f6d66f93162508b409aeaaf01580fe35bedd9ca03f77083332c0df3565e1d","sha256:571e449413ddbe10c22570460c6be8a102d7101cf121c4fd537ff472dac70a67"],"state_sha256":"8ae8bf87bd9c2e6087b74c69b2aa5bd39629e237b8c9e26a9e03ad2cfeb6d35e"}