{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:S3K6ONPOESFNV7ZQJNM7LHPTRW","short_pith_number":"pith:S3K6ONPO","canonical_record":{"source":{"id":"1803.00209","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-01T04:39:14Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"ee9beb74826ea5ed00dd6492775e89939087c63c32bac5bc37ec22d5d5c1ae04","abstract_canon_sha256":"45588b033fea695b03831ea3f77295077b220f2b047377b6310245129018f5e6"},"schema_version":"1.0"},"canonical_sha256":"96d5e735ee248adaff304b59f59df38d97e55ce78afa5ce166856e5052dea711","source":{"kind":"arxiv","id":"1803.00209","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00209","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00209v3","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00209","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"pith_short_12","alias_value":"S3K6ONPOESFN","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"S3K6ONPOESFNV7ZQ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"S3K6ONPO","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:S3K6ONPOESFNV7ZQJNM7LHPTRW","target":"record","payload":{"canonical_record":{"source":{"id":"1803.00209","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-01T04:39:14Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"ee9beb74826ea5ed00dd6492775e89939087c63c32bac5bc37ec22d5d5c1ae04","abstract_canon_sha256":"45588b033fea695b03831ea3f77295077b220f2b047377b6310245129018f5e6"},"schema_version":"1.0"},"canonical_sha256":"96d5e735ee248adaff304b59f59df38d97e55ce78afa5ce166856e5052dea711","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:53.006628Z","signature_b64":"VEcOm8ePDUMm5vOkjNneGYUvLT+F6cjH5O3e8KsSLn1qmHwPgYwyBhtjo73vaOaPjUWnSFCdfA11F+5bWIteBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96d5e735ee248adaff304b59f59df38d97e55ce78afa5ce166856e5052dea711","last_reissued_at":"2026-05-18T00:12:53.006105Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:53.006105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.00209","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":"2026-05-18T00:12:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zxq9fjgakHX1MTl4XwwtF7U7ewz6IW2ZnUOSafLl26L8KNxISR5SkdDjTSfmYnHrLtqfJF0vr3G/6jc9KXIHAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:03:31.623798Z"},"content_sha256":"cdb388b33c813e4c83796d13b4dae1a636fef1b70855bd2009d420b679072500","schema_version":"1.0","event_id":"sha256:cdb388b33c813e4c83796d13b4dae1a636fef1b70855bd2009d420b679072500"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:S3K6ONPOESFNV7ZQJNM7LHPTRW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic Mimetic Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"A. Jozani, H. R. Sepangi, M. H. Abbassi","submitted_at":"2018-03-01T04:39:14Z","abstract_excerpt":"We consider a mimetic set up in which the mimetic scalar is coupled to a vector field. It is shown that such a field with a time-like component does not contribute to the background equations and yet produces healthy isocurvature perturbations with respect to ghost and gradient instabilities in spite of the absence of any propagating curvature perturbations at the level of the quadratic action. We then consider a vector field with space-like components which leads to an anisotropic Bianchi universe and show that the ghost and gradient instabilities are absent in the limit of high momenta and t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00209","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":""},"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":"2026-05-18T00:12:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h9fjY5qGGmBvT7QdTe0fjRIaHQ/zhiSp8xXZg+59t0grzz7lF7rLI2PeugphsgXR7HUEequIrO4SuoY46YtMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T23:03:31.624294Z"},"content_sha256":"a63553678cfda38012a14e1a5a88e803e94cf1893ef75ef7eb054874c36183fb","schema_version":"1.0","event_id":"sha256:a63553678cfda38012a14e1a5a88e803e94cf1893ef75ef7eb054874c36183fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/bundle.json","state_url":"https://pith.science/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/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":"2026-08-15T23:03:31Z","links":{"resolver":"https://pith.science/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW","bundle":"https://pith.science/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/bundle.json","state":"https://pith.science/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S3K6ONPOESFNV7ZQJNM7LHPTRW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:S3K6ONPOESFNV7ZQJNM7LHPTRW","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":"45588b033fea695b03831ea3f77295077b220f2b047377b6310245129018f5e6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-01T04:39:14Z","title_canon_sha256":"ee9beb74826ea5ed00dd6492775e89939087c63c32bac5bc37ec22d5d5c1ae04"},"schema_version":"1.0","source":{"id":"1803.00209","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00209","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00209v3","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00209","created_at":"2026-05-18T00:12:53Z"},{"alias_kind":"pith_short_12","alias_value":"S3K6ONPOESFN","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"S3K6ONPOESFNV7ZQ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"S3K6ONPO","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:a63553678cfda38012a14e1a5a88e803e94cf1893ef75ef7eb054874c36183fb","target":"graph","created_at":"2026-05-18T00:12:53Z","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 consider a mimetic set up in which the mimetic scalar is coupled to a vector field. It is shown that such a field with a time-like component does not contribute to the background equations and yet produces healthy isocurvature perturbations with respect to ghost and gradient instabilities in spite of the absence of any propagating curvature perturbations at the level of the quadratic action. We then consider a vector field with space-like components which leads to an anisotropic Bianchi universe and show that the ghost and gradient instabilities are absent in the limit of high momenta and t","authors_text":"A. Jozani, H. R. Sepangi, M. H. Abbassi","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-01T04:39:14Z","title":"Anisotropic Mimetic Cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00209","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:cdb388b33c813e4c83796d13b4dae1a636fef1b70855bd2009d420b679072500","target":"record","created_at":"2026-05-18T00:12:53Z","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":"45588b033fea695b03831ea3f77295077b220f2b047377b6310245129018f5e6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-01T04:39:14Z","title_canon_sha256":"ee9beb74826ea5ed00dd6492775e89939087c63c32bac5bc37ec22d5d5c1ae04"},"schema_version":"1.0","source":{"id":"1803.00209","kind":"arxiv","version":3}},"canonical_sha256":"96d5e735ee248adaff304b59f59df38d97e55ce78afa5ce166856e5052dea711","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96d5e735ee248adaff304b59f59df38d97e55ce78afa5ce166856e5052dea711","first_computed_at":"2026-05-18T00:12:53.006105Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:53.006105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VEcOm8ePDUMm5vOkjNneGYUvLT+F6cjH5O3e8KsSLn1qmHwPgYwyBhtjo73vaOaPjUWnSFCdfA11F+5bWIteBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:53.006628Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00209","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdb388b33c813e4c83796d13b4dae1a636fef1b70855bd2009d420b679072500","sha256:a63553678cfda38012a14e1a5a88e803e94cf1893ef75ef7eb054874c36183fb"],"state_sha256":"cffd8b8f3ed68846c1fd25f5c08b3b8e07780e171581ea0bceaf669fab7f7b86"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"awvk7pq67An8VeaqUtyL1DBzGSib38dQPHHKjSzOiM3i5pE1PCK3C6uYDQdacDt0WNP2y2xvx/O5j4uwsnxLAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T23:03:31.630531Z","bundle_sha256":"99d275e4fcf2ef7fd30d4aeb4b14aa898a72a1bd331fe0443e31db491c4860c4"}}