{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:TT6FBRZ67ML7CNP5CNGNR3IJCP","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":"6a90fecd93fcdbfa60e713d9c5cad4d30b979d176c7bea79ae6a9c6fb869b475","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-08-02T17:07:30Z","title_canon_sha256":"8560dd4a7e0b9f42e5105576742389775bd9542f49f637507e5fdac4c918d7ad"},"schema_version":"1.0","source":{"id":"2308.01281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.01281","created_at":"2026-07-05T06:37:08Z"},{"alias_kind":"arxiv_version","alias_value":"2308.01281v1","created_at":"2026-07-05T06:37:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.01281","created_at":"2026-07-05T06:37:08Z"},{"alias_kind":"pith_short_12","alias_value":"TT6FBRZ67ML7","created_at":"2026-07-05T06:37:08Z"},{"alias_kind":"pith_short_16","alias_value":"TT6FBRZ67ML7CNP5","created_at":"2026-07-05T06:37:08Z"},{"alias_kind":"pith_short_8","alias_value":"TT6FBRZ6","created_at":"2026-07-05T06:37:08Z"}],"graph_snapshots":[{"event_id":"sha256:4c2fcd27deb0c7baf6660dae24d611f00b3e6439a33354b79f7334d70e4f5709","target":"graph","created_at":"2026-07-05T06:37:08Z","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/2308.01281/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We review the procedure to construct quasi-free ground states, for real scalar fields whose dynamics is dictated by the Klein-Gordon equation, on standard static Lorentzian manifolds with a time-like boundary. We observe that, depending on the assigned boundary condition of Robin type, this procedure does not always lead to the existence of a suitable bi-distribution $w_2\\in \\mathcal{D}'(M\\times M)$ due to the presence of infrared divergences. As a concrete example we consider a Bertotti-Robinson spacetime in two different coordinate patches. In one case we show that infrared divergences do no","authors_text":"Claudio Dappiaggi, Lissa de Souza Campos, Luca Sinibaldi","cross_cats":["gr-qc","math-ph","math.MP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-08-02T17:07:30Z","title":"Boundary conditions and infrared divergences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.01281","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:f958feabe977b0128f0b14c47e2007f7810b65a64529485ed533231f3596c79d","target":"record","created_at":"2026-07-05T06:37:08Z","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":"6a90fecd93fcdbfa60e713d9c5cad4d30b979d176c7bea79ae6a9c6fb869b475","cross_cats_sorted":["gr-qc","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-08-02T17:07:30Z","title_canon_sha256":"8560dd4a7e0b9f42e5105576742389775bd9542f49f637507e5fdac4c918d7ad"},"schema_version":"1.0","source":{"id":"2308.01281","kind":"arxiv","version":1}},"canonical_sha256":"9cfc50c73efb17f135fd134cd8ed0913f20838fd46f73e5eb53dafba82b2edec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cfc50c73efb17f135fd134cd8ed0913f20838fd46f73e5eb53dafba82b2edec","first_computed_at":"2026-07-05T06:37:08.025971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:37:08.025971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ijddjXlPn+kGSFodXW84VJXsBVHQskwnko0mQzsRFH0P4XaYFS0735IuZmRYHzJ21QNn9wUdd3lmE8S9FohgCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:37:08.026355Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.01281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f958feabe977b0128f0b14c47e2007f7810b65a64529485ed533231f3596c79d","sha256:4c2fcd27deb0c7baf6660dae24d611f00b3e6439a33354b79f7334d70e4f5709"],"state_sha256":"858ce146916868854c016ed5204f40932b33401dc9bcb4b51522ae5adb86a5b6"}