{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JXV7PLDRQYM3KEXVBT6PKMP3VE","short_pith_number":"pith:JXV7PLDR","canonical_record":{"source":{"id":"1312.0004","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-11-29T07:39:19Z","cross_cats_sorted":[],"title_canon_sha256":"1ee9304b9ac166ccd1f71198a38eb5ac004643cc67bcdb5abfa6507007883966","abstract_canon_sha256":"1e60c50d50f2149d6156860dd6caa38afd5151f8b2154dbfa73fac53514d7b8d"},"schema_version":"1.0"},"canonical_sha256":"4debf7ac718619b512f50cfcf531fba93505099a31cfb092124f99543c08698a","source":{"kind":"arxiv","id":"1312.0004","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0004","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0004v2","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0004","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"JXV7PLDRQYM3","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JXV7PLDRQYM3KEXV","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JXV7PLDR","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JXV7PLDRQYM3KEXVBT6PKMP3VE","target":"record","payload":{"canonical_record":{"source":{"id":"1312.0004","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-11-29T07:39:19Z","cross_cats_sorted":[],"title_canon_sha256":"1ee9304b9ac166ccd1f71198a38eb5ac004643cc67bcdb5abfa6507007883966","abstract_canon_sha256":"1e60c50d50f2149d6156860dd6caa38afd5151f8b2154dbfa73fac53514d7b8d"},"schema_version":"1.0"},"canonical_sha256":"4debf7ac718619b512f50cfcf531fba93505099a31cfb092124f99543c08698a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:05:09.494872Z","signature_b64":"r3RCcnHncVPSVYGpccSiQs4xT1T1pXJ+naE0Khv4Maipnd/OYGVYormf3/vUv1BpwGNX/+0HJdNq05uIw0gHBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4debf7ac718619b512f50cfcf531fba93505099a31cfb092124f99543c08698a","last_reissued_at":"2026-05-18T03:05:09.494401Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:05:09.494401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.0004","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":"2026-05-18T03:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wsINi64slQ6QpE6Zg+RH/nIxm5dMBn+w8liQOg0G2dFMSucVmunNPgqKHWgu7h6GEsy5Hdx9HGgPX9iBAJkYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:35:31.769602Z"},"content_sha256":"acbf1a40470521e0b0059d59f5568700288e612da5235b49fe624d0b7cb6e427","schema_version":"1.0","event_id":"sha256:acbf1a40470521e0b0059d59f5568700288e612da5235b49fe624d0b7cb6e427"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JXV7PLDRQYM3KEXVBT6PKMP3VE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A study on the dependence of the dimensionless Brans-Dicke parameter on the scalar field and their time dependence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Antonio Pasqua, Sudipto Roy, Surajit Chattopadhyay","submitted_at":"2013-11-29T07:39:19Z","abstract_excerpt":"The present paper reports a study on the dimensionless parameter $\\omega$ in Brans-Dicke theory. Based on a particular choice of scale factor $a$, we have investigated the signature flip of the deceleration parameter $q$ to see whether the transition from decelerated to accelerated expansion of the universe is achievable under this choice of scale factor. Restrictions on the parameters obtained for this choice of scale factor have been subsequently used for discussing the Brans-Dicke parameter for two choices of scalar fields $\\phi$. Moreover, analytical solutions for the Brans-Dicke parameter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0004","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":"2026-05-18T03:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YH86KlvFwI+Y3uQsFDdMArhxLN1R4ZHQDn2WBqSPe4fiDKLIbMQB9Y4hyRNEP9X5mrQN4qHCI1sNvPXlCE1xBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:35:31.769964Z"},"content_sha256":"eb67871abc9113c4b22ee51056ce707b4874b017572cd066c426db45ee86a1b0","schema_version":"1.0","event_id":"sha256:eb67871abc9113c4b22ee51056ce707b4874b017572cd066c426db45ee86a1b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/bundle.json","state_url":"https://pith.science/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/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":"2026-06-03T08:35:31Z","links":{"resolver":"https://pith.science/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE","bundle":"https://pith.science/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/bundle.json","state":"https://pith.science/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JXV7PLDRQYM3KEXVBT6PKMP3VE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JXV7PLDRQYM3KEXVBT6PKMP3VE","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":"1e60c50d50f2149d6156860dd6caa38afd5151f8b2154dbfa73fac53514d7b8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-11-29T07:39:19Z","title_canon_sha256":"1ee9304b9ac166ccd1f71198a38eb5ac004643cc67bcdb5abfa6507007883966"},"schema_version":"1.0","source":{"id":"1312.0004","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0004","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0004v2","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0004","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"JXV7PLDRQYM3","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JXV7PLDRQYM3KEXV","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JXV7PLDR","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:eb67871abc9113c4b22ee51056ce707b4874b017572cd066c426db45ee86a1b0","target":"graph","created_at":"2026-05-18T03:05:09Z","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":"The present paper reports a study on the dimensionless parameter $\\omega$ in Brans-Dicke theory. Based on a particular choice of scale factor $a$, we have investigated the signature flip of the deceleration parameter $q$ to see whether the transition from decelerated to accelerated expansion of the universe is achievable under this choice of scale factor. Restrictions on the parameters obtained for this choice of scale factor have been subsequently used for discussing the Brans-Dicke parameter for two choices of scalar fields $\\phi$. Moreover, analytical solutions for the Brans-Dicke parameter","authors_text":"Antonio Pasqua, Sudipto Roy, Surajit Chattopadhyay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-11-29T07:39:19Z","title":"A study on the dependence of the dimensionless Brans-Dicke parameter on the scalar field and their time dependence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0004","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:acbf1a40470521e0b0059d59f5568700288e612da5235b49fe624d0b7cb6e427","target":"record","created_at":"2026-05-18T03:05:09Z","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":"1e60c50d50f2149d6156860dd6caa38afd5151f8b2154dbfa73fac53514d7b8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-11-29T07:39:19Z","title_canon_sha256":"1ee9304b9ac166ccd1f71198a38eb5ac004643cc67bcdb5abfa6507007883966"},"schema_version":"1.0","source":{"id":"1312.0004","kind":"arxiv","version":2}},"canonical_sha256":"4debf7ac718619b512f50cfcf531fba93505099a31cfb092124f99543c08698a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4debf7ac718619b512f50cfcf531fba93505099a31cfb092124f99543c08698a","first_computed_at":"2026-05-18T03:05:09.494401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:05:09.494401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r3RCcnHncVPSVYGpccSiQs4xT1T1pXJ+naE0Khv4Maipnd/OYGVYormf3/vUv1BpwGNX/+0HJdNq05uIw0gHBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:05:09.494872Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.0004","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acbf1a40470521e0b0059d59f5568700288e612da5235b49fe624d0b7cb6e427","sha256:eb67871abc9113c4b22ee51056ce707b4874b017572cd066c426db45ee86a1b0"],"state_sha256":"5eec50804b0f8d0b43706871d9ab9158f2126f90a735eaf8053eeb13b46438ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bv+H2mmifL6BQ7a8eItOcBeNbSC2Xvsj6akt0R7dJn3pbz+uu+4zBwLEEZUr+3+2iuw4ZMeLkSY6BcBX/o5sCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T08:35:31.771938Z","bundle_sha256":"27741ef23829866a3392acbe9e821bd1f90731011cc9f367b08f5f5cf87a345c"}}