{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:R4X45ETZYSJWEVGTLXK4MUBQ5Z","short_pith_number":"pith:R4X45ETZ","canonical_record":{"source":{"id":"2104.14564","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-04-29T16:43:18Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"title_canon_sha256":"e4305099f25f3bd62a4b284501c08c64d257739296b33fbf1f94002da37c912b","abstract_canon_sha256":"f93b2dd7cf7e80646a91a047e61dd339bb23ea8a2540d3a5ea72a6d9659f4eaf"},"schema_version":"1.0"},"canonical_sha256":"8f2fce9279c4936254d35dd5c65030ee4c23f39df3a6c58557dcd13b0cf51386","source":{"kind":"arxiv","id":"2104.14564","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.14564","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"arxiv_version","alias_value":"2104.14564v1","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.14564","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_12","alias_value":"R4X45ETZYSJW","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_16","alias_value":"R4X45ETZYSJWEVGT","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_8","alias_value":"R4X45ETZ","created_at":"2026-07-05T03:21:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:R4X45ETZYSJWEVGTLXK4MUBQ5Z","target":"record","payload":{"canonical_record":{"source":{"id":"2104.14564","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-04-29T16:43:18Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"title_canon_sha256":"e4305099f25f3bd62a4b284501c08c64d257739296b33fbf1f94002da37c912b","abstract_canon_sha256":"f93b2dd7cf7e80646a91a047e61dd339bb23ea8a2540d3a5ea72a6d9659f4eaf"},"schema_version":"1.0"},"canonical_sha256":"8f2fce9279c4936254d35dd5c65030ee4c23f39df3a6c58557dcd13b0cf51386","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:21:47.700592Z","signature_b64":"ylwceloQjVo6AaMeyPRj9LE4XhweHXa23W7J4WLxZruOqTeGY0/krAcu91M5lUQ/JSeeeb/NXi4XW8Yw9JsXDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f2fce9279c4936254d35dd5c65030ee4c23f39df3a6c58557dcd13b0cf51386","last_reissued_at":"2026-07-05T03:21:47.700086Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:21:47.700086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.14564","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":"2026-07-05T03:21:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dIpUOEApDMEiHyazMHyenPJrnRgCB87ZkcCkX3p+ZCCaCkA3doSzx0kZpEVYE3gSnR1zm04HKjKQtFp1KSZrAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:00:57.060802Z"},"content_sha256":"57fe164d5d747ec8855b4cd98047c23ad51f2b1fbe42c9014ec228ecbd300aec","schema_version":"1.0","event_id":"sha256:57fe164d5d747ec8855b4cd98047c23ad51f2b1fbe42c9014ec228ecbd300aec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:R4X45ETZYSJWEVGTLXK4MUBQ5Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fifth-Force Screening around Extremely Compact Sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Benjamin Elder, Ben Thrussell, Clare Burrage, Daniela Saadeh, Peter Millington","submitted_at":"2021-04-29T16:43:18Z","abstract_excerpt":"Many non-linear scalar field theories possess a screening mechanism that can suppress any associated fifth force in dense environments. As a result, these theories can evade local experimental tests of new forces. Chameleon-like screening, which occurs because of non-linearities in the scalar potential or the coupling to matter, is well understood around extended objects. However, many experimental tests of these theories involve objects with spatial extent much smaller than the scalar field's Compton wavelength, and which could therefore be considered point-like. In this work, we determine ho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.14564","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/2104.14564/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":"2026-07-05T03:21:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nNJS8C14Dr3e5lCNMj5AVU6a0HaL2PGS+oUb1YHK22pORVyXXARousGRszVPK7WS8EmW7BLQ5xSpgFEWSbxYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:00:57.061926Z"},"content_sha256":"463cbdb192095f024edec92954367f365bfc12b35109477526bef582c309ec43","schema_version":"1.0","event_id":"sha256:463cbdb192095f024edec92954367f365bfc12b35109477526bef582c309ec43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/bundle.json","state_url":"https://pith.science/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/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":"2026-08-04T21:00:57Z","links":{"resolver":"https://pith.science/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z","bundle":"https://pith.science/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/bundle.json","state":"https://pith.science/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R4X45ETZYSJWEVGTLXK4MUBQ5Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:R4X45ETZYSJWEVGTLXK4MUBQ5Z","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":"f93b2dd7cf7e80646a91a047e61dd339bb23ea8a2540d3a5ea72a6d9659f4eaf","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-04-29T16:43:18Z","title_canon_sha256":"e4305099f25f3bd62a4b284501c08c64d257739296b33fbf1f94002da37c912b"},"schema_version":"1.0","source":{"id":"2104.14564","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.14564","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"arxiv_version","alias_value":"2104.14564v1","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.14564","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_12","alias_value":"R4X45ETZYSJW","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_16","alias_value":"R4X45ETZYSJWEVGT","created_at":"2026-07-05T03:21:47Z"},{"alias_kind":"pith_short_8","alias_value":"R4X45ETZ","created_at":"2026-07-05T03:21:47Z"}],"graph_snapshots":[{"event_id":"sha256:463cbdb192095f024edec92954367f365bfc12b35109477526bef582c309ec43","target":"graph","created_at":"2026-07-05T03:21:47Z","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/2104.14564/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many non-linear scalar field theories possess a screening mechanism that can suppress any associated fifth force in dense environments. As a result, these theories can evade local experimental tests of new forces. Chameleon-like screening, which occurs because of non-linearities in the scalar potential or the coupling to matter, is well understood around extended objects. However, many experimental tests of these theories involve objects with spatial extent much smaller than the scalar field's Compton wavelength, and which could therefore be considered point-like. In this work, we determine ho","authors_text":"Benjamin Elder, Ben Thrussell, Clare Burrage, Daniela Saadeh, Peter Millington","cross_cats":["astro-ph.CO","gr-qc","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-04-29T16:43:18Z","title":"Fifth-Force Screening around Extremely Compact Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.14564","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":"sha256:57fe164d5d747ec8855b4cd98047c23ad51f2b1fbe42c9014ec228ecbd300aec","target":"record","created_at":"2026-07-05T03:21:47Z","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":"f93b2dd7cf7e80646a91a047e61dd339bb23ea8a2540d3a5ea72a6d9659f4eaf","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-04-29T16:43:18Z","title_canon_sha256":"e4305099f25f3bd62a4b284501c08c64d257739296b33fbf1f94002da37c912b"},"schema_version":"1.0","source":{"id":"2104.14564","kind":"arxiv","version":1}},"canonical_sha256":"8f2fce9279c4936254d35dd5c65030ee4c23f39df3a6c58557dcd13b0cf51386","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f2fce9279c4936254d35dd5c65030ee4c23f39df3a6c58557dcd13b0cf51386","first_computed_at":"2026-07-05T03:21:47.700086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:21:47.700086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ylwceloQjVo6AaMeyPRj9LE4XhweHXa23W7J4WLxZruOqTeGY0/krAcu91M5lUQ/JSeeeb/NXi4XW8Yw9JsXDA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:21:47.700592Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.14564","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57fe164d5d747ec8855b4cd98047c23ad51f2b1fbe42c9014ec228ecbd300aec","sha256:463cbdb192095f024edec92954367f365bfc12b35109477526bef582c309ec43"],"state_sha256":"150684143367d2274ac66ea6bffbcea4c0c670cfe9596d40441342255d6f61cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7HgqV+AE7cVJvXy2qDEarTHAEFpHwVCk2IOSVyZYrh9a8kMeeUrO+XpbI6gxadt1SaN4cQfYI4D8AUR9+heRAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T21:00:57.067348Z","bundle_sha256":"97bb05446c523a285476a5f42407a5d92a8fb345d67521037d8195aa92050a22"}}