{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DVGXBRCQEP2QZ7UAZFL2KGBZRY","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":"306dc636696911348e7016f90604d850dcab9624d9e2e431f5a3c2ae5cc3531e","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-11T16:17:32Z","title_canon_sha256":"189b4507fb13fa6875ff6ad269084605a8d26a6a68be9d692a0550e27b05c9e7"},"schema_version":"1.0","source":{"id":"1312.3225","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.3225","created_at":"2026-05-18T02:55:38Z"},{"alias_kind":"arxiv_version","alias_value":"1312.3225v1","created_at":"2026-05-18T02:55:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.3225","created_at":"2026-05-18T02:55:38Z"},{"alias_kind":"pith_short_12","alias_value":"DVGXBRCQEP2Q","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DVGXBRCQEP2QZ7UA","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DVGXBRCQ","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:03d94d1892e7e480b25873c6a5aa048216d08eae33fb63a769aeb2ec49663cd5","target":"graph","created_at":"2026-05-18T02:55:38Z","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 report on the search for a CPT and Lorentz invariance violating coupling of the 3He and 129Xe nuclear spins (each largely determined by a valence neutron) to background tensor fields which permeate the universe. Our experimental approach is to measure the free precession of nuclear spin polarized 3He and 129Xe atoms in a homogeneous magnetic guiding field of about 400 nT using LTC SQUIDs as low-noise magnetic flux detectors. As the laboratory reference frame rotates with respect to distant stars, we look for a sidereal modulation of the Larmor frequencies of the co-located spin samples. As ","authors_text":"A. Scharth (2), A. Schnabel (3), F. Allmendinger (1), Germany), Germany (2) Institut f\\\"ur Physik, Germany (3) Physikalisch-Technische Bundesanstalt Berlin, Heidelberg, Johannes Gutenberg-Universit\\\"at, K. Tullney (2) ((1) Physikalisches Institut, Mainz, Ruprecht-Karls-Universit\\\"at, S. Karpuk (2), U. Schmidt (1), W. Heil (2), W. Kilian (3), Yu. Sobolev (2)","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-11T16:17:32Z","title":"New limit on Lorentz and CPT violating neutron spin interactions using a free precession 3He-129Xe co-magnetometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.3225","kind":"arxiv","version":1},"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":"sha256:7b22cb23b260bef17c4243820cb2ad279244d7bc8696bd36dcda14eec690149a","target":"record","created_at":"2026-05-18T02:55:38Z","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":"306dc636696911348e7016f90604d850dcab9624d9e2e431f5a3c2ae5cc3531e","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-11T16:17:32Z","title_canon_sha256":"189b4507fb13fa6875ff6ad269084605a8d26a6a68be9d692a0550e27b05c9e7"},"schema_version":"1.0","source":{"id":"1312.3225","kind":"arxiv","version":1}},"canonical_sha256":"1d4d70c45023f50cfe80c957a518398e0d828c88310e080e031889de1b33d18b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d4d70c45023f50cfe80c957a518398e0d828c88310e080e031889de1b33d18b","first_computed_at":"2026-05-18T02:55:38.228310Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:38.228310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"abl2cB20d42IQjygYMinXFYsnHOHfak8U+L/OFZENx+cq9rKu87tCvBHm1iMa7jKsCpgQIJFuNTR7tU86y4mBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:38.228888Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.3225","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b22cb23b260bef17c4243820cb2ad279244d7bc8696bd36dcda14eec690149a","sha256:03d94d1892e7e480b25873c6a5aa048216d08eae33fb63a769aeb2ec49663cd5"],"state_sha256":"935e5191ea60076401586f8a01c6b30e0bc3163b458214a98e2b52d64730b786"}