{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:MRTD64TZOWXLT4PSXQVIR5A3YJ","short_pith_number":"pith:MRTD64TZ","canonical_record":{"source":{"id":"1606.03981","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-06-13T14:49:47Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"e7e2fc585b01111c86e517b578c5f46c2bd5bcb0bfc128e50a06600ed7b079f9","abstract_canon_sha256":"1dfc7aa8e3461ba8b52955415cd8154d05f4fb333d63ec6f2d44ced5a53a05cc"},"schema_version":"1.0"},"canonical_sha256":"64663f727975aeb9f1f2bc2a88f41bc26618f46faa1260db4e0ca6a7457ca66e","source":{"kind":"arxiv","id":"1606.03981","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03981","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03981v1","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03981","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"pith_short_12","alias_value":"MRTD64TZOWXL","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MRTD64TZOWXLT4PS","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MRTD64TZ","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:MRTD64TZOWXLT4PSXQVIR5A3YJ","target":"record","payload":{"canonical_record":{"source":{"id":"1606.03981","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-06-13T14:49:47Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"e7e2fc585b01111c86e517b578c5f46c2bd5bcb0bfc128e50a06600ed7b079f9","abstract_canon_sha256":"1dfc7aa8e3461ba8b52955415cd8154d05f4fb333d63ec6f2d44ced5a53a05cc"},"schema_version":"1.0"},"canonical_sha256":"64663f727975aeb9f1f2bc2a88f41bc26618f46faa1260db4e0ca6a7457ca66e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:40.395657Z","signature_b64":"uwDahRuHXKTif74sxEFG30j5R2PXviAcHGwXRo9+/ijc/IITr2AX/l16hpTEiN1phRQXuqlvjQCx4KtktzwdDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64663f727975aeb9f1f2bc2a88f41bc26618f46faa1260db4e0ca6a7457ca66e","last_reissued_at":"2026-05-18T00:46:40.395040Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:40.395040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.03981","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":"2026-05-18T00:46:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5pUBV5vcWd0dmDaZUKduOfI2UVvBN5691gaDFnezDH2lzfld543tYZ5W8xOoVKeiI/Tgeg2hEBEuv6NkKgVECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:27:33.987746Z"},"content_sha256":"0fd653264faa11e125336598edef4449df22c4279664062f583f7c6e4bd47a32","schema_version":"1.0","event_id":"sha256:0fd653264faa11e125336598edef4449df22c4279664062f583f7c6e4bd47a32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:MRTD64TZOWXLT4PSXQVIR5A3YJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravitational Higgs Mechanism in Neutron Star Interiors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-th"],"primary_cat":"gr-qc","authors_text":"Andrew Coates, Michael W. Horbartsch, Thomas P. Sotiriou","submitted_at":"2016-06-13T14:49:47Z","abstract_excerpt":"We suggest that nonminimally coupled scalar fields can lead to modifications of the microphysics in the interiors of relativistic stars. As a concrete example, we consider the generation of a non-zero photon mass in such high-density environments. This is achieved by means of a light gravitational scalar, and the scalarization phase transition in scalar-tensor theories of gravitation. Two distinct models are presented, and phenomenological implications are briefly discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03981","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":""},"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":"2026-05-18T00:46:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SwLircTytcJ0wjDoyWTcHWhqddGoQ0wzLh5PwK4O7I6kDK0y3+6kjl6Py0RKoB7EboSzjfGCv+o8T4htLRetBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:27:33.988367Z"},"content_sha256":"dc34c812d4df1ac39f339e317068ea9804d8494be6cd0757bca93ec415c41717","schema_version":"1.0","event_id":"sha256:dc34c812d4df1ac39f339e317068ea9804d8494be6cd0757bca93ec415c41717"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/bundle.json","state_url":"https://pith.science/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/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":"2026-05-27T11:27:33Z","links":{"resolver":"https://pith.science/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ","bundle":"https://pith.science/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/bundle.json","state":"https://pith.science/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MRTD64TZOWXLT4PSXQVIR5A3YJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MRTD64TZOWXLT4PSXQVIR5A3YJ","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":"1dfc7aa8e3461ba8b52955415cd8154d05f4fb333d63ec6f2d44ced5a53a05cc","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-06-13T14:49:47Z","title_canon_sha256":"e7e2fc585b01111c86e517b578c5f46c2bd5bcb0bfc128e50a06600ed7b079f9"},"schema_version":"1.0","source":{"id":"1606.03981","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03981","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03981v1","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03981","created_at":"2026-05-18T00:46:40Z"},{"alias_kind":"pith_short_12","alias_value":"MRTD64TZOWXL","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MRTD64TZOWXLT4PS","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MRTD64TZ","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:dc34c812d4df1ac39f339e317068ea9804d8494be6cd0757bca93ec415c41717","target":"graph","created_at":"2026-05-18T00:46:40Z","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 suggest that nonminimally coupled scalar fields can lead to modifications of the microphysics in the interiors of relativistic stars. As a concrete example, we consider the generation of a non-zero photon mass in such high-density environments. This is achieved by means of a light gravitational scalar, and the scalarization phase transition in scalar-tensor theories of gravitation. Two distinct models are presented, and phenomenological implications are briefly discussed.","authors_text":"Andrew Coates, Michael W. Horbartsch, Thomas P. Sotiriou","cross_cats":["astro-ph.HE","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-06-13T14:49:47Z","title":"Gravitational Higgs Mechanism in Neutron Star Interiors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03981","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":"sha256:0fd653264faa11e125336598edef4449df22c4279664062f583f7c6e4bd47a32","target":"record","created_at":"2026-05-18T00:46:40Z","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":"1dfc7aa8e3461ba8b52955415cd8154d05f4fb333d63ec6f2d44ced5a53a05cc","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-06-13T14:49:47Z","title_canon_sha256":"e7e2fc585b01111c86e517b578c5f46c2bd5bcb0bfc128e50a06600ed7b079f9"},"schema_version":"1.0","source":{"id":"1606.03981","kind":"arxiv","version":1}},"canonical_sha256":"64663f727975aeb9f1f2bc2a88f41bc26618f46faa1260db4e0ca6a7457ca66e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64663f727975aeb9f1f2bc2a88f41bc26618f46faa1260db4e0ca6a7457ca66e","first_computed_at":"2026-05-18T00:46:40.395040Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:40.395040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uwDahRuHXKTif74sxEFG30j5R2PXviAcHGwXRo9+/ijc/IITr2AX/l16hpTEiN1phRQXuqlvjQCx4KtktzwdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:40.395657Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.03981","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fd653264faa11e125336598edef4449df22c4279664062f583f7c6e4bd47a32","sha256:dc34c812d4df1ac39f339e317068ea9804d8494be6cd0757bca93ec415c41717"],"state_sha256":"d22aa2e74a662e4e640f93e693bf9405d601829a9efce9314b03f78667b87b57"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S5nFE3m9mtn1To3lscwUA/UlwynvNOnEhM3xaBVHDgVE2S9+UxckyrrZ+RyyrKoR6AR6/IATlVM9h85/234kAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T11:27:33.990940Z","bundle_sha256":"a032bde65ac6641fca5d3d09793adc038243cb6f2af06e1da9c462ea42790080"}}