{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:DEPPMUIKQSG7FHDVSBAW3FBMAX","short_pith_number":"pith:DEPPMUIK","canonical_record":{"source":{"id":"1010.6233","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T14:47:49Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"4a6f8452a725444d29f2f3d13f1bf857da2dcc564d8e7d9bf08a8f76cec1ffcb","abstract_canon_sha256":"f574b97cb4fbc53e39602f7f7c2cf69d2e382a3aea72c3650aff35784565d017"},"schema_version":"1.0"},"canonical_sha256":"191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224","source":{"kind":"arxiv","id":"1010.6233","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.6233","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"arxiv_version","alias_value":"1010.6233v4","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.6233","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"pith_short_12","alias_value":"DEPPMUIKQSG7","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"DEPPMUIKQSG7FHDV","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"DEPPMUIK","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:DEPPMUIKQSG7FHDVSBAW3FBMAX","target":"record","payload":{"canonical_record":{"source":{"id":"1010.6233","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T14:47:49Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"4a6f8452a725444d29f2f3d13f1bf857da2dcc564d8e7d9bf08a8f76cec1ffcb","abstract_canon_sha256":"f574b97cb4fbc53e39602f7f7c2cf69d2e382a3aea72c3650aff35784565d017"},"schema_version":"1.0"},"canonical_sha256":"191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:54.896597Z","signature_b64":"68rcZfGsJ1LmUo1UBbajpmP27u/OhjTfOw/diF8ppZZ9GqLu1GzYf3L7SZvhCOGOsl992KLmYAc4pQ1iKnBdDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224","last_reissued_at":"2026-05-18T02:04:54.895883Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:54.895883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.6233","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:04:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nTuk2cCbB1761E3NRi7FFMu7Kj4SzC7pUIwaNjCn8/wK1uf3Q/R4ZStC8O8l16yBLBpzYBnsBh2lA5GLGq4wDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:51:43.888107Z"},"content_sha256":"0f7f338022de8b64997d3922cfc3a90abc175e74528b2522034028753f70053d","schema_version":"1.0","event_id":"sha256:0f7f338022de8b64997d3922cfc3a90abc175e74528b2522034028753f70053d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:DEPPMUIKQSG7FHDVSBAW3FBMAX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Space-time variation of the electron-to-proton mass ratio in a Weyl model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Daniel Sudarsky, Florencia A. Teppa Pannia, Susana J. Landau, Yuri Bonder","submitted_at":"2010-10-29T14:47:49Z","abstract_excerpt":"Seeking a possible explanation for recent data indicating a space-time variation of the electron-to-proton mass ratio within the Milky Way, we consider a phenomenological model where the effective fermion masses depend on the local value of the Weyl tensor. We contrast the required values of the model's free parameters with bounds obtained from modern tests on the violation of the Weak Equivalence Principle and we find that these quantities are incompatible. This result indicates that the variation of nucleon and electron masses through a coupling with the Weyl tensor is not a viable model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.6233","kind":"arxiv","version":4},"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":"2026-05-18T02:04:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IJX1Bu154GkO8ZPf0oQIQctsQfyAPpgbHwK4z1VgdAe3MEhUHNhdTl9EjrLORzKYIziPD6DzS3ErNRsxJ71TDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:51:43.888475Z"},"content_sha256":"14871af929791f152801ce47554e10d4aa420e799877af419cb0c9d3cf542104","schema_version":"1.0","event_id":"sha256:14871af929791f152801ce47554e10d4aa420e799877af419cb0c9d3cf542104"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/bundle.json","state_url":"https://pith.science/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/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":"2026-06-03T05:51:43Z","links":{"resolver":"https://pith.science/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX","bundle":"https://pith.science/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/bundle.json","state":"https://pith.science/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DEPPMUIKQSG7FHDVSBAW3FBMAX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:DEPPMUIKQSG7FHDVSBAW3FBMAX","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":"f574b97cb4fbc53e39602f7f7c2cf69d2e382a3aea72c3650aff35784565d017","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T14:47:49Z","title_canon_sha256":"4a6f8452a725444d29f2f3d13f1bf857da2dcc564d8e7d9bf08a8f76cec1ffcb"},"schema_version":"1.0","source":{"id":"1010.6233","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.6233","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"arxiv_version","alias_value":"1010.6233v4","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.6233","created_at":"2026-05-18T02:04:54Z"},{"alias_kind":"pith_short_12","alias_value":"DEPPMUIKQSG7","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"DEPPMUIKQSG7FHDV","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"DEPPMUIK","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:14871af929791f152801ce47554e10d4aa420e799877af419cb0c9d3cf542104","target":"graph","created_at":"2026-05-18T02:04:54Z","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":"Seeking a possible explanation for recent data indicating a space-time variation of the electron-to-proton mass ratio within the Milky Way, we consider a phenomenological model where the effective fermion masses depend on the local value of the Weyl tensor. We contrast the required values of the model's free parameters with bounds obtained from modern tests on the violation of the Weak Equivalence Principle and we find that these quantities are incompatible. This result indicates that the variation of nucleon and electron masses through a coupling with the Weyl tensor is not a viable model.","authors_text":"Daniel Sudarsky, Florencia A. Teppa Pannia, Susana J. Landau, Yuri Bonder","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T14:47:49Z","title":"Space-time variation of the electron-to-proton mass ratio in a Weyl model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.6233","kind":"arxiv","version":4},"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":"sha256:0f7f338022de8b64997d3922cfc3a90abc175e74528b2522034028753f70053d","target":"record","created_at":"2026-05-18T02:04:54Z","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":"f574b97cb4fbc53e39602f7f7c2cf69d2e382a3aea72c3650aff35784565d017","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T14:47:49Z","title_canon_sha256":"4a6f8452a725444d29f2f3d13f1bf857da2dcc564d8e7d9bf08a8f76cec1ffcb"},"schema_version":"1.0","source":{"id":"1010.6233","kind":"arxiv","version":4}},"canonical_sha256":"191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"191ef6510a848df29c7590416d942c05d1c5d14fe7d0161c0270eff818ce7224","first_computed_at":"2026-05-18T02:04:54.895883Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:54.895883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"68rcZfGsJ1LmUo1UBbajpmP27u/OhjTfOw/diF8ppZZ9GqLu1GzYf3L7SZvhCOGOsl992KLmYAc4pQ1iKnBdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:54.896597Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.6233","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f7f338022de8b64997d3922cfc3a90abc175e74528b2522034028753f70053d","sha256:14871af929791f152801ce47554e10d4aa420e799877af419cb0c9d3cf542104"],"state_sha256":"ec9917de085532fa95e5f45b5f3996212d99a948fc8d7f7bda27e5ea523b9f81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YLL7ZNUbugOpmVQZbyoJQeUZ6ZfB+2um+I3UFSK+PDqKxH+9VnQcsbGPQEvZnQ3KTGncUgKz1kP/zrPVPBqCBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:51:43.890460Z","bundle_sha256":"e869f0c55b5d015d590c09d6d3a9e3e72426a5a25f55ab3b7fd4ae5f3388507e"}}