{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:6QX47CFGZHEMDFNCPMSB4L6KHH","short_pith_number":"pith:6QX47CFG","schema_version":"1.0","canonical_sha256":"f42fcf88a6c9c8c195a27b241e2fca39c5c4ffdba22ca4771378cbddca7a3bf2","source":{"kind":"arxiv","id":"1908.03998","version":2},"attestation_state":"computed","paper":{"title":"Simple Perturbatively Traversable Wormholes from Bulk Fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Donald Marolf, Sean McBride","submitted_at":"2019-08-12T04:37:51Z","abstract_excerpt":"A new class of traversable wormholes was recently constructed which relies only on local bulk dynamics rather than an explicit coupling between distinct boundaries. Here we begin with a four-dimensional Weyl fermion field of any mass $m$ propagating on a classical background defined by a ${\\mathbb Z}_2$ quotient of (rotating) BTZ $\\times \\, S^1$. This setup allows one to compute the fermion stress-energy tensor exactly. For appropriate boundary conditions around a non-contractible curve, perturbative back-reaction at any $m$ renders the associated wormhole traversable and suggests it can becom"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1908.03998","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2019-08-12T04:37:51Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"83cc0b1cbed6b28eb74265054aa84f1bdd9cc947d514f870878fce7c497f6732","abstract_canon_sha256":"5a82c7d1681bd0eea6b207059d33a4600485d3bc493dbc795f555e9544d4606d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:19:09.984409Z","signature_b64":"zaNWIEtFsR+YvfvgHpi26j6MTNrrihREXjt/yGX/jvDdCyUpTR315ol4E2B9pVOFfFq1VeFM7IAcHi7Y5zdwAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f42fcf88a6c9c8c195a27b241e2fca39c5c4ffdba22ca4771378cbddca7a3bf2","last_reissued_at":"2026-07-05T00:19:09.983915Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:19:09.983915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Simple Perturbatively Traversable Wormholes from Bulk Fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Donald Marolf, Sean McBride","submitted_at":"2019-08-12T04:37:51Z","abstract_excerpt":"A new class of traversable wormholes was recently constructed which relies only on local bulk dynamics rather than an explicit coupling between distinct boundaries. Here we begin with a four-dimensional Weyl fermion field of any mass $m$ propagating on a classical background defined by a ${\\mathbb Z}_2$ quotient of (rotating) BTZ $\\times \\, S^1$. This setup allows one to compute the fermion stress-energy tensor exactly. For appropriate boundary conditions around a non-contractible curve, perturbative back-reaction at any $m$ renders the associated wormhole traversable and suggests it can becom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.03998","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/1908.03998/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1908.03998","created_at":"2026-07-05T00:19:09.983974+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.03998v2","created_at":"2026-07-05T00:19:09.983974+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.03998","created_at":"2026-07-05T00:19:09.983974+00:00"},{"alias_kind":"pith_short_12","alias_value":"6QX47CFGZHEM","created_at":"2026-07-05T00:19:09.983974+00:00"},{"alias_kind":"pith_short_16","alias_value":"6QX47CFGZHEMDFNC","created_at":"2026-07-05T00:19:09.983974+00:00"},{"alias_kind":"pith_short_8","alias_value":"6QX47CFG","created_at":"2026-07-05T00:19:09.983974+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.12528","citing_title":"How traversable is a traversable wormhole?","ref_index":18,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH","json":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH.json","graph_json":"https://pith.science/api/pith-number/6QX47CFGZHEMDFNCPMSB4L6KHH/graph.json","events_json":"https://pith.science/api/pith-number/6QX47CFGZHEMDFNCPMSB4L6KHH/events.json","paper":"https://pith.science/paper/6QX47CFG"},"agent_actions":{"view_html":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH","download_json":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH.json","view_paper":"https://pith.science/paper/6QX47CFG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.03998&json=true","fetch_graph":"https://pith.science/api/pith-number/6QX47CFGZHEMDFNCPMSB4L6KHH/graph.json","fetch_events":"https://pith.science/api/pith-number/6QX47CFGZHEMDFNCPMSB4L6KHH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH/action/storage_attestation","attest_author":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH/action/author_attestation","sign_citation":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH/action/citation_signature","submit_replication":"https://pith.science/pith/6QX47CFGZHEMDFNCPMSB4L6KHH/action/replication_record"}},"created_at":"2026-07-05T00:19:09.983974+00:00","updated_at":"2026-07-05T00:19:09.983974+00:00"}