{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:V7KFLRSIHNWL7KXQUSMI36GBG6","short_pith_number":"pith:V7KFLRSI","canonical_record":{"source":{"id":"1903.11519","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-03-27T16:15:59Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"707f6ffb2f101cc4633c22feb08effa634530083b52456ef511ca11ef7fe5ce5","abstract_canon_sha256":"a2567a504112a6b257ac9f822e73d57fc02105ca6ab65b2d39a06d1acb4b5b0e"},"schema_version":"1.0"},"canonical_sha256":"afd455c6483b6cbfaaf0a4988df8c137a2037ab82eec8da554cf517f0a8e24fc","source":{"kind":"arxiv","id":"1903.11519","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.11519","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"arxiv_version","alias_value":"1903.11519v3","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.11519","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_12","alias_value":"V7KFLRSIHNWL","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_16","alias_value":"V7KFLRSIHNWL7KXQ","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_8","alias_value":"V7KFLRSI","created_at":"2026-07-05T00:11:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:V7KFLRSIHNWL7KXQUSMI36GBG6","target":"record","payload":{"canonical_record":{"source":{"id":"1903.11519","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-03-27T16:15:59Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"707f6ffb2f101cc4633c22feb08effa634530083b52456ef511ca11ef7fe5ce5","abstract_canon_sha256":"a2567a504112a6b257ac9f822e73d57fc02105ca6ab65b2d39a06d1acb4b5b0e"},"schema_version":"1.0"},"canonical_sha256":"afd455c6483b6cbfaaf0a4988df8c137a2037ab82eec8da554cf517f0a8e24fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:11:57.711557Z","signature_b64":"qWcvvOMNBHZXyijhNxBytQ94knERdsNCSVZ3hPg7SrODNa/I4tj857sTy2Cf65ADdAxj9p1FplA/TcVlZeJPCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afd455c6483b6cbfaaf0a4988df8c137a2037ab82eec8da554cf517f0a8e24fc","last_reissued_at":"2026-07-05T00:11:57.711081Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:11:57.711081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.11519","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:11:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M7No4ZBiOb4RZbYVIVK6tlGesmybI6lBlPD8f1Zxb3HY+4cxGmXR3VAkEyzqxMaRZyeEWxSwjuwSuhfEcG8wCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T03:16:43.722895Z"},"content_sha256":"2fdf8591cfcc1b204f91a256102510c8a3ab529cdfd0cff04e26e6e40a8fdaec","schema_version":"1.0","event_id":"sha256:2fdf8591cfcc1b204f91a256102510c8a3ab529cdfd0cff04e26e6e40a8fdaec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:V7KFLRSIHNWL7KXQUSMI36GBG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Screening $\\Lambda$ in a new modified gravity model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Charles V. R. Board, J. Alberto Vazquez, John D. Barrow, N. Merve Uzun, Ozgur Akarsu","submitted_at":"2019-03-27T16:15:59Z","abstract_excerpt":"We study a new model of Energy-Momentum Squared Gravity (EMSG), called Energy-Momentum Log Gravity (EMLG), constructed by the addition of the term $f(T_{\\mu\\nu}T^{\\mu\\nu})=\\alpha \\ln(\\lambda\\,T_{\\mu\\nu}T^{\\mu\\nu})$, envisaged as a correction, to the Einstein-Hilbert action with cosmological constant $\\Lambda$. The choice of this modification is made as a specific way of including new terms in the right-hand side of the Einstein field equations, resulting in constant effective inertial mass density and, importantly, leading to an explicit exact solution of the matter energy density in terms of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11519","kind":"arxiv","version":3},"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/1903.11519/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":"2026-07-05T00:11:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QH3fyvB51GHBR8NkEiQZPhgjNYp+McJZxfJP3Kz1bLsMXY5UuYE5Im6WeF24w9H7dM+moiWiuzbfeSY8veqnBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T03:16:43.723409Z"},"content_sha256":"d0ab2c3d88ee67a8ed8666634bf4c1f4533f5283c41b6b1f8148d2cd37c1f868","schema_version":"1.0","event_id":"sha256:d0ab2c3d88ee67a8ed8666634bf4c1f4533f5283c41b6b1f8148d2cd37c1f868"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/bundle.json","state_url":"https://pith.science/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/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":"2026-08-20T03:16:43Z","links":{"resolver":"https://pith.science/pith/V7KFLRSIHNWL7KXQUSMI36GBG6","bundle":"https://pith.science/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/bundle.json","state":"https://pith.science/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V7KFLRSIHNWL7KXQUSMI36GBG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:V7KFLRSIHNWL7KXQUSMI36GBG6","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":"a2567a504112a6b257ac9f822e73d57fc02105ca6ab65b2d39a06d1acb4b5b0e","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-03-27T16:15:59Z","title_canon_sha256":"707f6ffb2f101cc4633c22feb08effa634530083b52456ef511ca11ef7fe5ce5"},"schema_version":"1.0","source":{"id":"1903.11519","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.11519","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"arxiv_version","alias_value":"1903.11519v3","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.11519","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_12","alias_value":"V7KFLRSIHNWL","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_16","alias_value":"V7KFLRSIHNWL7KXQ","created_at":"2026-07-05T00:11:57Z"},{"alias_kind":"pith_short_8","alias_value":"V7KFLRSI","created_at":"2026-07-05T00:11:57Z"}],"graph_snapshots":[{"event_id":"sha256:d0ab2c3d88ee67a8ed8666634bf4c1f4533f5283c41b6b1f8148d2cd37c1f868","target":"graph","created_at":"2026-07-05T00:11:57Z","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/1903.11519/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study a new model of Energy-Momentum Squared Gravity (EMSG), called Energy-Momentum Log Gravity (EMLG), constructed by the addition of the term $f(T_{\\mu\\nu}T^{\\mu\\nu})=\\alpha \\ln(\\lambda\\,T_{\\mu\\nu}T^{\\mu\\nu})$, envisaged as a correction, to the Einstein-Hilbert action with cosmological constant $\\Lambda$. The choice of this modification is made as a specific way of including new terms in the right-hand side of the Einstein field equations, resulting in constant effective inertial mass density and, importantly, leading to an explicit exact solution of the matter energy density in terms of ","authors_text":"Charles V. R. Board, J. Alberto Vazquez, John D. Barrow, N. Merve Uzun, Ozgur Akarsu","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-03-27T16:15:59Z","title":"Screening $\\Lambda$ in a new modified gravity model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11519","kind":"arxiv","version":3},"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":"sha256:2fdf8591cfcc1b204f91a256102510c8a3ab529cdfd0cff04e26e6e40a8fdaec","target":"record","created_at":"2026-07-05T00:11:57Z","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":"a2567a504112a6b257ac9f822e73d57fc02105ca6ab65b2d39a06d1acb4b5b0e","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-03-27T16:15:59Z","title_canon_sha256":"707f6ffb2f101cc4633c22feb08effa634530083b52456ef511ca11ef7fe5ce5"},"schema_version":"1.0","source":{"id":"1903.11519","kind":"arxiv","version":3}},"canonical_sha256":"afd455c6483b6cbfaaf0a4988df8c137a2037ab82eec8da554cf517f0a8e24fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"afd455c6483b6cbfaaf0a4988df8c137a2037ab82eec8da554cf517f0a8e24fc","first_computed_at":"2026-07-05T00:11:57.711081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:11:57.711081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qWcvvOMNBHZXyijhNxBytQ94knERdsNCSVZ3hPg7SrODNa/I4tj857sTy2Cf65ADdAxj9p1FplA/TcVlZeJPCg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:11:57.711557Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.11519","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fdf8591cfcc1b204f91a256102510c8a3ab529cdfd0cff04e26e6e40a8fdaec","sha256:d0ab2c3d88ee67a8ed8666634bf4c1f4533f5283c41b6b1f8148d2cd37c1f868"],"state_sha256":"854da912c670b26271cef6394fe715a28e5cf99513b22ad7e9625cfb6cdf7e7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s2YUNZyjT0mmPkN6vzC6X8ryHAb20uMXWyaNe4pPdTDvzaR+LUX6+Drleq/dRw96DWS+xMRqunzBqYpWdiHKDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T03:16:43.728599Z","bundle_sha256":"6818e28ae78ebd0338b811c03687a24b3768f530a61bbb59966db8867f402ac2"}}