{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:55WXQUENCBTIZTBUNFHQIX6SNB","short_pith_number":"pith:55WXQUEN","canonical_record":{"source":{"id":"1810.01890","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-10-03T18:00:08Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"title_canon_sha256":"3ad76d2a8b06e702d87866c51d599bbb417e3b1cc50f3a8b0623f8df0bef0ab2","abstract_canon_sha256":"7d41509c3bf43098b929710c5cc1d665786e30234a2b7203bad3178e51691ea6"},"schema_version":"1.0"},"canonical_sha256":"ef6d78508d10668ccc34694f045fd2685218e36d9b2c6e177111f7596447970f","source":{"kind":"arxiv","id":"1810.01890","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.01890","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1810.01890v2","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.01890","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"55WXQUENCBTI","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"55WXQUENCBTIZTBU","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"55WXQUEN","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:55WXQUENCBTIZTBUNFHQIX6SNB","target":"record","payload":{"canonical_record":{"source":{"id":"1810.01890","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-10-03T18:00:08Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"title_canon_sha256":"3ad76d2a8b06e702d87866c51d599bbb417e3b1cc50f3a8b0623f8df0bef0ab2","abstract_canon_sha256":"7d41509c3bf43098b929710c5cc1d665786e30234a2b7203bad3178e51691ea6"},"schema_version":"1.0"},"canonical_sha256":"ef6d78508d10668ccc34694f045fd2685218e36d9b2c6e177111f7596447970f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:03.294967Z","signature_b64":"oCkRgQKert7hDCkM2VoLxhkqMuKJgDIaIgF/IYdR1NUOkO+TRngNxImbIVax+LbYAHSSQaq7uuL/53J+Dz85AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef6d78508d10668ccc34694f045fd2685218e36d9b2c6e177111f7596447970f","last_reissued_at":"2026-05-17T23:49:03.294418Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:03.294418Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.01890","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nI1sYliHZMLeAcoZGdji9HAwFfsBv4uMGd0VnQO2s4+JUEDBygTaKhKUtOS24tbMn1y9NbCYURcOdWhqn0PHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:44:52.951206Z"},"content_sha256":"75ee559b4cb738b3195fa85770e906de5537d70407049580f51e204c1e69582c","schema_version":"1.0","event_id":"sha256:75ee559b4cb738b3195fa85770e906de5537d70407049580f51e204c1e69582c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:55WXQUENCBTIZTBUNFHQIX6SNB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Particle level screening of scalar forces in 1+1 dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-ph"],"primary_cat":"hep-th","authors_text":"Benjamin Elder, Clare Burrage, Peter Millington","submitted_at":"2018-10-03T18:00:08Z","abstract_excerpt":"We investigate how non-linear scalar field theories respond to point sources. Taking the symmetron as a specific example of such a theory, we solve the non-linear equation of motion in one spatial dimension for (i) an isolated point source and (ii) two identical point sources with arbitrary separation. We find that the mass of a single point source can be screened by the symmetron field, provided that its mass is above a critical value. We find that two point sources behave as independent, isolated sources when the separation between them is large, but, when their separation is smaller than th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.01890","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-17T23:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QOYZfEvod7g+vWSiIiZG8ihcxwKG31WFJ8lvclFYIOvFa8basLCnbDBzYR+EFJabJFW7XDDAZ9hgY/b0GWSLDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:44:52.951613Z"},"content_sha256":"ed29ef9ee3a3d872cc8ad205e4c1c9df2fb4080147bd0d32b462d9a2feb5f105","schema_version":"1.0","event_id":"sha256:ed29ef9ee3a3d872cc8ad205e4c1c9df2fb4080147bd0d32b462d9a2feb5f105"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/55WXQUENCBTIZTBUNFHQIX6SNB/bundle.json","state_url":"https://pith.science/pith/55WXQUENCBTIZTBUNFHQIX6SNB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/55WXQUENCBTIZTBUNFHQIX6SNB/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":"2026-06-04T12:44:52Z","links":{"resolver":"https://pith.science/pith/55WXQUENCBTIZTBUNFHQIX6SNB","bundle":"https://pith.science/pith/55WXQUENCBTIZTBUNFHQIX6SNB/bundle.json","state":"https://pith.science/pith/55WXQUENCBTIZTBUNFHQIX6SNB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/55WXQUENCBTIZTBUNFHQIX6SNB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:55WXQUENCBTIZTBUNFHQIX6SNB","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":"7d41509c3bf43098b929710c5cc1d665786e30234a2b7203bad3178e51691ea6","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-10-03T18:00:08Z","title_canon_sha256":"3ad76d2a8b06e702d87866c51d599bbb417e3b1cc50f3a8b0623f8df0bef0ab2"},"schema_version":"1.0","source":{"id":"1810.01890","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.01890","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1810.01890v2","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.01890","created_at":"2026-05-17T23:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"55WXQUENCBTI","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"55WXQUENCBTIZTBU","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"55WXQUEN","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:ed29ef9ee3a3d872cc8ad205e4c1c9df2fb4080147bd0d32b462d9a2feb5f105","target":"graph","created_at":"2026-05-17T23:49:03Z","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":"We investigate how non-linear scalar field theories respond to point sources. Taking the symmetron as a specific example of such a theory, we solve the non-linear equation of motion in one spatial dimension for (i) an isolated point source and (ii) two identical point sources with arbitrary separation. We find that the mass of a single point source can be screened by the symmetron field, provided that its mass is above a critical value. We find that two point sources behave as independent, isolated sources when the separation between them is large, but, when their separation is smaller than th","authors_text":"Benjamin Elder, Clare Burrage, Peter Millington","cross_cats":["astro-ph.CO","gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-10-03T18:00:08Z","title":"Particle level screening of scalar forces in 1+1 dimensions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.01890","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":"sha256:75ee559b4cb738b3195fa85770e906de5537d70407049580f51e204c1e69582c","target":"record","created_at":"2026-05-17T23:49:03Z","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":"7d41509c3bf43098b929710c5cc1d665786e30234a2b7203bad3178e51691ea6","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-10-03T18:00:08Z","title_canon_sha256":"3ad76d2a8b06e702d87866c51d599bbb417e3b1cc50f3a8b0623f8df0bef0ab2"},"schema_version":"1.0","source":{"id":"1810.01890","kind":"arxiv","version":2}},"canonical_sha256":"ef6d78508d10668ccc34694f045fd2685218e36d9b2c6e177111f7596447970f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef6d78508d10668ccc34694f045fd2685218e36d9b2c6e177111f7596447970f","first_computed_at":"2026-05-17T23:49:03.294418Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:03.294418Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oCkRgQKert7hDCkM2VoLxhkqMuKJgDIaIgF/IYdR1NUOkO+TRngNxImbIVax+LbYAHSSQaq7uuL/53J+Dz85AQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:03.294967Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.01890","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75ee559b4cb738b3195fa85770e906de5537d70407049580f51e204c1e69582c","sha256:ed29ef9ee3a3d872cc8ad205e4c1c9df2fb4080147bd0d32b462d9a2feb5f105"],"state_sha256":"3ff01463fc5f811ea1b0bed55a29b5c858c4a35f9e0b21cd0786b3c9aa2503d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wP1ZKUd0yzkFtnBk4dF8uYrPA2gImZHC5lgBNobDM8V4g+6aBgGWTMrrEbTFAZo8Fn6ol6JiCqmJtQsQ9voUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:44:52.953571Z","bundle_sha256":"8854d59883e38e7f71216d6aa888480972b29882a11ce59d0184fb4ed6e5d69d"}}