{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:OC7RAMRKJ25KZG6CAT2SH27MYK","short_pith_number":"pith:OC7RAMRK","canonical_record":{"source":{"id":"2309.12379","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-09-21T12:40:35Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6bd0a4ac7c076902d8d59ae2a985ee2aa314c9825cebd08677ce5a407c3166dc","abstract_canon_sha256":"ec3ec3f560d6331ab39d1e7ae5932e0c14b1c9e934b5a2dd50df761dcb8293bf"},"schema_version":"1.0"},"canonical_sha256":"70bf10322a4ebaac9bc204f523ebecc2b99a98473a7e5c436fcc4470f4741127","source":{"kind":"arxiv","id":"2309.12379","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.12379","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"arxiv_version","alias_value":"2309.12379v2","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.12379","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_12","alias_value":"OC7RAMRKJ25K","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_16","alias_value":"OC7RAMRKJ25KZG6C","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_8","alias_value":"OC7RAMRK","created_at":"2026-07-05T07:18:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:OC7RAMRKJ25KZG6CAT2SH27MYK","target":"record","payload":{"canonical_record":{"source":{"id":"2309.12379","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-09-21T12:40:35Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6bd0a4ac7c076902d8d59ae2a985ee2aa314c9825cebd08677ce5a407c3166dc","abstract_canon_sha256":"ec3ec3f560d6331ab39d1e7ae5932e0c14b1c9e934b5a2dd50df761dcb8293bf"},"schema_version":"1.0"},"canonical_sha256":"70bf10322a4ebaac9bc204f523ebecc2b99a98473a7e5c436fcc4470f4741127","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:18:29.889312Z","signature_b64":"Gf73ky8xzUy/zN3BPEApeIjZdrN4TnWLDzG5JRFlYSeJWZMATffPAb4YR0VU0txXsBSZga2ZiJmqeTXehyNsBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70bf10322a4ebaac9bc204f523ebecc2b99a98473a7e5c436fcc4470f4741127","last_reissued_at":"2026-07-05T07:18:29.888818Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:18:29.888818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.12379","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":"2026-07-05T07:18:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yAOGtRr9yCh9Hhx8Kr+qu8oP4aTYsZTNxEar1bFrnPuqUG+oJbPnU7rVuXsBaaAw7+bW6PSTzqWs1Be9U6+QAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:38:15.307614Z"},"content_sha256":"cd1a74d7ea8f4ed825479d702df20db13f78d65a5a4bb991769828bd74cb5824","schema_version":"1.0","event_id":"sha256:cd1a74d7ea8f4ed825479d702df20db13f78d65a5a4bb991769828bd74cb5824"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:OC7RAMRKJ25KZG6CAT2SH27MYK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wormhole solution free of ghosts in Einstein's gravity with two scalar fields","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"G.G.L. Nashed, Shin'ichi Nojiri","submitted_at":"2023-09-21T12:40:35Z","abstract_excerpt":"In this paper, we construct models that admit the traversable wormhole geometries in the framework of Einstein's gravity with two scalar fields. As well known, the energy conditions are broken and we show that there appears a ghost. The ghost can be, however, eliminated by imposing a constraint on the ghost field, which is a scalar. The constraint is similar to the mimetic one proposed by Chamseddine and Mukhanov to construct an alternative description of cold dark matter. We explicitly show that there does not appear any unstable mode although the energy conditions are broken. Therefore we ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.12379","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.12379/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":"2026-07-05T07:18:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iDYLNzNqA4wvtlianR+qrmpA/jHGpvVdABa6Of6jcP6QA0QXnW8MSSUcwLBxGvyuD67RdqLIvzE+6WRKqPGaCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:38:15.308290Z"},"content_sha256":"4fcc09ab4e83310a32285f42879edb5c904531f22801bad3a76a50c68fb926b9","schema_version":"1.0","event_id":"sha256:4fcc09ab4e83310a32285f42879edb5c904531f22801bad3a76a50c68fb926b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/bundle.json","state_url":"https://pith.science/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/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":"2026-08-04T20:38:15Z","links":{"resolver":"https://pith.science/pith/OC7RAMRKJ25KZG6CAT2SH27MYK","bundle":"https://pith.science/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/bundle.json","state":"https://pith.science/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OC7RAMRKJ25KZG6CAT2SH27MYK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:OC7RAMRKJ25KZG6CAT2SH27MYK","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":"ec3ec3f560d6331ab39d1e7ae5932e0c14b1c9e934b5a2dd50df761dcb8293bf","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-09-21T12:40:35Z","title_canon_sha256":"6bd0a4ac7c076902d8d59ae2a985ee2aa314c9825cebd08677ce5a407c3166dc"},"schema_version":"1.0","source":{"id":"2309.12379","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.12379","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"arxiv_version","alias_value":"2309.12379v2","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.12379","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_12","alias_value":"OC7RAMRKJ25K","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_16","alias_value":"OC7RAMRKJ25KZG6C","created_at":"2026-07-05T07:18:29Z"},{"alias_kind":"pith_short_8","alias_value":"OC7RAMRK","created_at":"2026-07-05T07:18:29Z"}],"graph_snapshots":[{"event_id":"sha256:4fcc09ab4e83310a32285f42879edb5c904531f22801bad3a76a50c68fb926b9","target":"graph","created_at":"2026-07-05T07:18:29Z","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/2309.12379/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we construct models that admit the traversable wormhole geometries in the framework of Einstein's gravity with two scalar fields. As well known, the energy conditions are broken and we show that there appears a ghost. The ghost can be, however, eliminated by imposing a constraint on the ghost field, which is a scalar. The constraint is similar to the mimetic one proposed by Chamseddine and Mukhanov to construct an alternative description of cold dark matter. We explicitly show that there does not appear any unstable mode although the energy conditions are broken. Therefore we ob","authors_text":"G.G.L. Nashed, Shin'ichi Nojiri","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-09-21T12:40:35Z","title":"Wormhole solution free of ghosts in Einstein's gravity with two scalar fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.12379","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:cd1a74d7ea8f4ed825479d702df20db13f78d65a5a4bb991769828bd74cb5824","target":"record","created_at":"2026-07-05T07:18:29Z","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":"ec3ec3f560d6331ab39d1e7ae5932e0c14b1c9e934b5a2dd50df761dcb8293bf","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-th","submitted_at":"2023-09-21T12:40:35Z","title_canon_sha256":"6bd0a4ac7c076902d8d59ae2a985ee2aa314c9825cebd08677ce5a407c3166dc"},"schema_version":"1.0","source":{"id":"2309.12379","kind":"arxiv","version":2}},"canonical_sha256":"70bf10322a4ebaac9bc204f523ebecc2b99a98473a7e5c436fcc4470f4741127","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70bf10322a4ebaac9bc204f523ebecc2b99a98473a7e5c436fcc4470f4741127","first_computed_at":"2026-07-05T07:18:29.888818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:18:29.888818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gf73ky8xzUy/zN3BPEApeIjZdrN4TnWLDzG5JRFlYSeJWZMATffPAb4YR0VU0txXsBSZga2ZiJmqeTXehyNsBg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:18:29.889312Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.12379","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd1a74d7ea8f4ed825479d702df20db13f78d65a5a4bb991769828bd74cb5824","sha256:4fcc09ab4e83310a32285f42879edb5c904531f22801bad3a76a50c68fb926b9"],"state_sha256":"4b00ec1300980a1207957deab604d9b2051498a684c748c6edefa7154d1ba85c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g565rKnPqn4o1soWkrqdKR8XZIoMaKqGI5jR2K4W+WOxbHNXugwzlGNPVSbaBRd0dPeosNxRbwuGey/KYXZqAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T20:38:15.313630Z","bundle_sha256":"1e8b1c29df9d691422696fff5efcc8be16474fb8cf5385da80cf4904b8a29522"}}