{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:CDAUE75SV6C2AIOHDH7DJJEODM","short_pith_number":"pith:CDAUE75S","schema_version":"1.0","canonical_sha256":"10c1427fb2af85a021c719fe34a48e1b266121719c78e62d021b0142583526dc","source":{"kind":"arxiv","id":"hep-th/0307254","version":2},"attestation_state":"computed","paper":{"title":"Suppressing the Cosmological Constant in Non-Supersymmetric Type I Strings","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-th","authors_text":"Carlo Angelantonj, Ignatios Antoniadis","submitted_at":"2003-07-25T16:54:37Z","abstract_excerpt":"We construct non-supersymmetric type I string models which correspond to consistent flat-space solutions of all classical equations of motion. Moreover, the one-loop vacuum energy is naturally fixed by the size of compact extra dimensions which, in the two-dimensional case, can be lowered to a fraction of a millimetre. This class of models has interesting non-abelian gauge groups and can accommodate chiral fermions. In the large radius limit, supersymmetry is recovered in the bulk, while D-brane excitations, although non-supersymmetric, exhibit Fermi-Bose degeneracy at all mass levels. We also"},"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":"hep-th/0307254","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2003-07-25T16:54:37Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"93e0cdde45f3000fbf4987f8f978256b48cf49b620590279acf919651304c0fa","abstract_canon_sha256":"9a519a7458c203e99f4a8dc1e9f5b20e2d3b5b236a580862fc57f441c0cc9e06"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:24:43.185965Z","signature_b64":"NKhLYqfXweoSxLt6e2yFWEXv+Zfs0HbWWsrbEJBjzvk6kzdv/JGlWRNf2LPHzp8t9G7wt9ugoAKTXlHbK5RHCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"10c1427fb2af85a021c719fe34a48e1b266121719c78e62d021b0142583526dc","last_reissued_at":"2026-07-04T17:24:43.185589Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:24:43.185589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Suppressing the Cosmological Constant in Non-Supersymmetric Type I Strings","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-th","authors_text":"Carlo Angelantonj, Ignatios Antoniadis","submitted_at":"2003-07-25T16:54:37Z","abstract_excerpt":"We construct non-supersymmetric type I string models which correspond to consistent flat-space solutions of all classical equations of motion. Moreover, the one-loop vacuum energy is naturally fixed by the size of compact extra dimensions which, in the two-dimensional case, can be lowered to a fraction of a millimetre. This class of models has interesting non-abelian gauge groups and can accommodate chiral fermions. In the large radius limit, supersymmetry is recovered in the bulk, while D-brane excitations, although non-supersymmetric, exhibit Fermi-Bose degeneracy at all mass levels. We also"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0307254","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/hep-th/0307254/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":"hep-th/0307254","created_at":"2026-07-04T17:24:43.185661+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0307254v2","created_at":"2026-07-04T17:24:43.185661+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0307254","created_at":"2026-07-04T17:24:43.185661+00:00"},{"alias_kind":"pith_short_12","alias_value":"CDAUE75SV6C2","created_at":"2026-07-04T17:24:43.185661+00:00"},{"alias_kind":"pith_short_16","alias_value":"CDAUE75SV6C2AIOH","created_at":"2026-07-04T17:24:43.185661+00:00"},{"alias_kind":"pith_short_8","alias_value":"CDAUE75S","created_at":"2026-07-04T17:24:43.185661+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2602.07113","citing_title":"Asymmetric orbifolds with vanishing one-loop vacuum energy","ref_index":5,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM","json":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM.json","graph_json":"https://pith.science/api/pith-number/CDAUE75SV6C2AIOHDH7DJJEODM/graph.json","events_json":"https://pith.science/api/pith-number/CDAUE75SV6C2AIOHDH7DJJEODM/events.json","paper":"https://pith.science/paper/CDAUE75S"},"agent_actions":{"view_html":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM","download_json":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM.json","view_paper":"https://pith.science/paper/CDAUE75S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-th/0307254&json=true","fetch_graph":"https://pith.science/api/pith-number/CDAUE75SV6C2AIOHDH7DJJEODM/graph.json","fetch_events":"https://pith.science/api/pith-number/CDAUE75SV6C2AIOHDH7DJJEODM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM/action/storage_attestation","attest_author":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM/action/author_attestation","sign_citation":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM/action/citation_signature","submit_replication":"https://pith.science/pith/CDAUE75SV6C2AIOHDH7DJJEODM/action/replication_record"}},"created_at":"2026-07-04T17:24:43.185661+00:00","updated_at":"2026-07-04T17:24:43.185661+00:00"}