{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:HQDKYYFH3BNJC5YXRIP4IERZOY","short_pith_number":"pith:HQDKYYFH","canonical_record":{"source":{"id":"2606.23389","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-06-22T14:17:12Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"f42af3fb560cc94841be09fd1998ddcf7d75bfe4281be27abcd600716ee0e9ae","abstract_canon_sha256":"679cf73b6a3af4e87986d8abe698988ad69e37a4d1ea9ada2a12be049e9dac7b"},"schema_version":"1.0"},"canonical_sha256":"3c06ac60a7d85a9177178a1fc412397609e1f43574263be207636711207b94b6","source":{"kind":"arxiv","id":"2606.23389","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23389","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23389v1","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23389","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"HQDKYYFH3BNJ","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_16","alias_value":"HQDKYYFH3BNJC5YX","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_8","alias_value":"HQDKYYFH","created_at":"2026-06-23T03:14:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:HQDKYYFH3BNJC5YXRIP4IERZOY","target":"record","payload":{"canonical_record":{"source":{"id":"2606.23389","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-06-22T14:17:12Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"f42af3fb560cc94841be09fd1998ddcf7d75bfe4281be27abcd600716ee0e9ae","abstract_canon_sha256":"679cf73b6a3af4e87986d8abe698988ad69e37a4d1ea9ada2a12be049e9dac7b"},"schema_version":"1.0"},"canonical_sha256":"3c06ac60a7d85a9177178a1fc412397609e1f43574263be207636711207b94b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-23T03:14:18.556684Z","signature_b64":"iLBgNHo1HOIC1DCdBKPfBfJogNg6431CgoWd4vDK3KjjNR44aBrl2WHCLX7dV+VwwyiKhu72qAlw9tIaVdIDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3c06ac60a7d85a9177178a1fc412397609e1f43574263be207636711207b94b6","last_reissued_at":"2026-06-23T03:14:18.556250Z","signature_status":"signed_v1","first_computed_at":"2026-06-23T03:14:18.556250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.23389","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":"2026-06-23T03:14:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"06dXrsEygXoN4GGlxOdUmJ93X7otCSAHM+Yy+qtML/T7ct5QD5rNHnShz+VOgOc128SB5FqQ4ajGNnWWk9IaAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T18:38:48.445762Z"},"content_sha256":"dc03ec12c8c31f88ce91711f7cb0b87044c70d4f6449474e63173e1beed28c2d","schema_version":"1.0","event_id":"sha256:dc03ec12c8c31f88ce91711f7cb0b87044c70d4f6449474e63173e1beed28c2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:HQDKYYFH3BNJC5YXRIP4IERZOY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scattered wave functions and worldline instantons for particle production in curved spacetime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"gr-qc","authors_text":"Greger Torgrimsson, Philip Semr\\'en","submitted_at":"2026-06-22T14:17:12Z","abstract_excerpt":"We study the production of spin-$1/2$ particle-antiparticle pairs in curved spacetimes with nontrivial dependence on more than one coordinate. To this end, we develop two complementary approaches. First, we extend the scattered-wave-function (SWF) method, originally introduced for pair production in electromagnetic backgrounds, to curved spacetime backgrounds. Second, we complete the development of an open-worldline-instanton method by deriving the pre-exponential factor of the pair-production probability. We apply both methods to several two-dimensional metrics and find good agreement between"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23389","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.23389/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-23T03:14:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/4vQ2KC/eYoM0IVB6WYPd5PFjGjkdDaQw0GYbmvCl2QznZuBPKA9QcVzGiMo66BmhqL32rwbXQAS5xrRgyJbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T18:38:48.446133Z"},"content_sha256":"cea627cb6644c591dc1712eecf086819820dba2fb285c2c8b19f6f8405005876","schema_version":"1.0","event_id":"sha256:cea627cb6644c591dc1712eecf086819820dba2fb285c2c8b19f6f8405005876"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/bundle.json","state_url":"https://pith.science/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/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":"2026-06-28T18:38:48Z","links":{"resolver":"https://pith.science/pith/HQDKYYFH3BNJC5YXRIP4IERZOY","bundle":"https://pith.science/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/bundle.json","state":"https://pith.science/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HQDKYYFH3BNJC5YXRIP4IERZOY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HQDKYYFH3BNJC5YXRIP4IERZOY","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":"679cf73b6a3af4e87986d8abe698988ad69e37a4d1ea9ada2a12be049e9dac7b","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-06-22T14:17:12Z","title_canon_sha256":"f42af3fb560cc94841be09fd1998ddcf7d75bfe4281be27abcd600716ee0e9ae"},"schema_version":"1.0","source":{"id":"2606.23389","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23389","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23389v1","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23389","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"HQDKYYFH3BNJ","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_16","alias_value":"HQDKYYFH3BNJC5YX","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_8","alias_value":"HQDKYYFH","created_at":"2026-06-23T03:14:18Z"}],"graph_snapshots":[{"event_id":"sha256:cea627cb6644c591dc1712eecf086819820dba2fb285c2c8b19f6f8405005876","target":"graph","created_at":"2026-06-23T03:14:18Z","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/2606.23389/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the production of spin-$1/2$ particle-antiparticle pairs in curved spacetimes with nontrivial dependence on more than one coordinate. To this end, we develop two complementary approaches. First, we extend the scattered-wave-function (SWF) method, originally introduced for pair production in electromagnetic backgrounds, to curved spacetime backgrounds. Second, we complete the development of an open-worldline-instanton method by deriving the pre-exponential factor of the pair-production probability. We apply both methods to several two-dimensional metrics and find good agreement between","authors_text":"Greger Torgrimsson, Philip Semr\\'en","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-06-22T14:17:12Z","title":"Scattered wave functions and worldline instantons for particle production in curved spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23389","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:dc03ec12c8c31f88ce91711f7cb0b87044c70d4f6449474e63173e1beed28c2d","target":"record","created_at":"2026-06-23T03:14:18Z","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":"679cf73b6a3af4e87986d8abe698988ad69e37a4d1ea9ada2a12be049e9dac7b","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-06-22T14:17:12Z","title_canon_sha256":"f42af3fb560cc94841be09fd1998ddcf7d75bfe4281be27abcd600716ee0e9ae"},"schema_version":"1.0","source":{"id":"2606.23389","kind":"arxiv","version":1}},"canonical_sha256":"3c06ac60a7d85a9177178a1fc412397609e1f43574263be207636711207b94b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3c06ac60a7d85a9177178a1fc412397609e1f43574263be207636711207b94b6","first_computed_at":"2026-06-23T03:14:18.556250Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-23T03:14:18.556250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iLBgNHo1HOIC1DCdBKPfBfJogNg6431CgoWd4vDK3KjjNR44aBrl2WHCLX7dV+VwwyiKhu72qAlw9tIaVdIDAw==","signature_status":"signed_v1","signed_at":"2026-06-23T03:14:18.556684Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.23389","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc03ec12c8c31f88ce91711f7cb0b87044c70d4f6449474e63173e1beed28c2d","sha256:cea627cb6644c591dc1712eecf086819820dba2fb285c2c8b19f6f8405005876"],"state_sha256":"ea1abfde22e666b618e968114bdc9a95c4f8bd5bdb8bfa9342724d73c45b82bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5HAcLkZm176CAfEk0UdZoyilPN8h5TZ40E4pb9GyBZxYk/5wKdcDPElZ5drYUn/5fEqb92bqkFAMrff/8mB2Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T18:38:48.448171Z","bundle_sha256":"dab1751aff49376cd0b518b7b390829569dbfad0ba1547e08b797e58e0939fce"}}