{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:DAKYZJF22JDXMQZWF4YMB3QATT","short_pith_number":"pith:DAKYZJF2","canonical_record":{"source":{"id":"1412.8696","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-12-30T17:23:57Z","cross_cats_sorted":[],"title_canon_sha256":"1457e2e65a2e6378156f24f466dc81e66d510afa4f2969a843b7eafd42feb117","abstract_canon_sha256":"46d46a21b4fb291c04b20590474397c1ee5754973c9d0f5b7ba71126405e65d6"},"schema_version":"1.0"},"canonical_sha256":"18158ca4bad2477643362f30c0ee009cfeac8f3cf0015f919d3448cc2533af39","source":{"kind":"arxiv","id":"1412.8696","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8696","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8696v2","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8696","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"pith_short_12","alias_value":"DAKYZJF22JDX","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"DAKYZJF22JDXMQZW","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"DAKYZJF2","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:DAKYZJF22JDXMQZWF4YMB3QATT","target":"record","payload":{"canonical_record":{"source":{"id":"1412.8696","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-12-30T17:23:57Z","cross_cats_sorted":[],"title_canon_sha256":"1457e2e65a2e6378156f24f466dc81e66d510afa4f2969a843b7eafd42feb117","abstract_canon_sha256":"46d46a21b4fb291c04b20590474397c1ee5754973c9d0f5b7ba71126405e65d6"},"schema_version":"1.0"},"canonical_sha256":"18158ca4bad2477643362f30c0ee009cfeac8f3cf0015f919d3448cc2533af39","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:40.745732Z","signature_b64":"9Ip6NVWMxyk62+fAb12GVoPtI0PYvbEl7ozPiyYNx2bN/+OFZhKreUxX3nqmGi55+Er+GieT4I7IevbwEXAQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18158ca4bad2477643362f30c0ee009cfeac8f3cf0015f919d3448cc2533af39","last_reissued_at":"2026-05-18T02:25:40.745131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:40.745131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.8696","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":"2026-05-18T02:25:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VhO8v0iX0MdYmlpO+xjqdRCYlHWh/yYo4vNeiWLh64vszuW0suTbd5MyLuIJRoAHycj2ojKwBcrmskzh1V2rBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:14.030809Z"},"content_sha256":"86fb28f58b24f972eb200cbc1d003180997efe5e044df504d3eb01dbdd623828","schema_version":"1.0","event_id":"sha256:86fb28f58b24f972eb200cbc1d003180997efe5e044df504d3eb01dbdd623828"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:DAKYZJF22JDXMQZWF4YMB3QATT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Heterotic QCD Axion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Andrei Constantin, Andre Lukas, Evgeny I. Buchbinder","submitted_at":"2014-12-30T17:23:57Z","abstract_excerpt":"We show that a KSVZ axion with a decay constant in the phenomenologically allowed range can be obtained in certain $E_8\\times E_8$ heterotic string models. These models have an enhanced symmetry locus in the moduli space, and a non-universal, Kahler moduli dependent Fayet-Iliopoulos term which vanishes at this locus. Close to this locus the Fayet-Iliopoulos term is small and can lead to an axion decay constant significantly lower than the string scale. In this way, the no-go arguments of Svrcek and Witten, which are based on a universal, dilaton-dependent Fayet-Iliopoulos term, can be avoided."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8696","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":"2026-05-18T02:25:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b33PmYd2JG31v3+l/5KdOOl3jfj98Ixgfbd9RkpEkyXwz4Tc/l1On55QLKD3PRU2PbR5qIpTc364allV61CHBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:14.031461Z"},"content_sha256":"0ed75ac4f82ed8909e7b89b910334b32f4d841e4d4134e0647b95178190e5e55","schema_version":"1.0","event_id":"sha256:0ed75ac4f82ed8909e7b89b910334b32f4d841e4d4134e0647b95178190e5e55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DAKYZJF22JDXMQZWF4YMB3QATT/bundle.json","state_url":"https://pith.science/pith/DAKYZJF22JDXMQZWF4YMB3QATT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DAKYZJF22JDXMQZWF4YMB3QATT/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":"2026-05-27T15:51:14Z","links":{"resolver":"https://pith.science/pith/DAKYZJF22JDXMQZWF4YMB3QATT","bundle":"https://pith.science/pith/DAKYZJF22JDXMQZWF4YMB3QATT/bundle.json","state":"https://pith.science/pith/DAKYZJF22JDXMQZWF4YMB3QATT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DAKYZJF22JDXMQZWF4YMB3QATT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:DAKYZJF22JDXMQZWF4YMB3QATT","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":"46d46a21b4fb291c04b20590474397c1ee5754973c9d0f5b7ba71126405e65d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-12-30T17:23:57Z","title_canon_sha256":"1457e2e65a2e6378156f24f466dc81e66d510afa4f2969a843b7eafd42feb117"},"schema_version":"1.0","source":{"id":"1412.8696","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8696","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8696v2","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8696","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"pith_short_12","alias_value":"DAKYZJF22JDX","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"DAKYZJF22JDXMQZW","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"DAKYZJF2","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:0ed75ac4f82ed8909e7b89b910334b32f4d841e4d4134e0647b95178190e5e55","target":"graph","created_at":"2026-05-18T02:25:40Z","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 show that a KSVZ axion with a decay constant in the phenomenologically allowed range can be obtained in certain $E_8\\times E_8$ heterotic string models. These models have an enhanced symmetry locus in the moduli space, and a non-universal, Kahler moduli dependent Fayet-Iliopoulos term which vanishes at this locus. Close to this locus the Fayet-Iliopoulos term is small and can lead to an axion decay constant significantly lower than the string scale. In this way, the no-go arguments of Svrcek and Witten, which are based on a universal, dilaton-dependent Fayet-Iliopoulos term, can be avoided.","authors_text":"Andrei Constantin, Andre Lukas, Evgeny I. Buchbinder","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-12-30T17:23:57Z","title":"A Heterotic QCD Axion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8696","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":"sha256:86fb28f58b24f972eb200cbc1d003180997efe5e044df504d3eb01dbdd623828","target":"record","created_at":"2026-05-18T02:25:40Z","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":"46d46a21b4fb291c04b20590474397c1ee5754973c9d0f5b7ba71126405e65d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-12-30T17:23:57Z","title_canon_sha256":"1457e2e65a2e6378156f24f466dc81e66d510afa4f2969a843b7eafd42feb117"},"schema_version":"1.0","source":{"id":"1412.8696","kind":"arxiv","version":2}},"canonical_sha256":"18158ca4bad2477643362f30c0ee009cfeac8f3cf0015f919d3448cc2533af39","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18158ca4bad2477643362f30c0ee009cfeac8f3cf0015f919d3448cc2533af39","first_computed_at":"2026-05-18T02:25:40.745131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:40.745131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Ip6NVWMxyk62+fAb12GVoPtI0PYvbEl7ozPiyYNx2bN/+OFZhKreUxX3nqmGi55+Er+GieT4I7IevbwEXAQCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:40.745732Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8696","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86fb28f58b24f972eb200cbc1d003180997efe5e044df504d3eb01dbdd623828","sha256:0ed75ac4f82ed8909e7b89b910334b32f4d841e4d4134e0647b95178190e5e55"],"state_sha256":"8268baedcf5ca10db755a0e75c2384297defaf8ab1496c6e0447247e3b1eb3de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EjGlUj22XFK1EjS4OCYQ6TB3lBA9QuX0iSG5mPIG1I8UDuIhZax56XEoFaJGFSmMtXQDzNJquc8DYAGITg6DAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:51:14.034911Z","bundle_sha256":"cb9f0c1b40a660623ffbaab893f5da8dddacb548dcbdddee9f54223f1a722dbf"}}