{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:IYEY6BZXEYM7FT5A6JVI3KRRJB","short_pith_number":"pith:IYEY6BZX","schema_version":"1.0","canonical_sha256":"46098f07372619f2cfa0f26a8daa31486bfa329fada6bd0b3c985e998c95a36f","source":{"kind":"arxiv","id":"2207.06174","version":1},"attestation_state":"computed","paper":{"title":"Fermion-axion stars: static solutions and dynamical stability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Davide Guerra, Dimitra Tseneklidou, Fabrizio Di Giovanni, Miquel Miravet-Ten\\'es, Simone Albanesi","submitted_at":"2022-07-13T13:14:12Z","abstract_excerpt":"We construct spherically-symmetric static solutions of the Einstein-Klein-Gordon-Euler system involving a complex scalar field governed by a periodic potential which emerges in models of axion-like particles, and fermionic matter modeled by a perfect fluid with a polytropic equation of state. Such solutions describe gravitationally bound composites of fermions and axions which we dub as fermion-axion stars. Sequences of pure axion-stars in the existence domain may show the presence of multiple stable branches depending on the value of the decay constant parameter in the potential; this reflect"},"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":"2207.06174","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-07-13T13:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"8d5b3176bc4eb4fa672c0e4a63931879a3acfa730eb7cdaf8fb00f00e656ecb9","abstract_canon_sha256":"ef0e8fe60161d0489105e3da577d6881919266106fed6ac3836a035109357250"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:40:02.428909Z","signature_b64":"x8awQuLMAfEk1AGB9UAHePayyVFhAyvjL8qe3FTEop/SmfJGNMz1Empjjm+5DfNSIGrxFzT7BcnX91qC6pqDCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46098f07372619f2cfa0f26a8daa31486bfa329fada6bd0b3c985e998c95a36f","last_reissued_at":"2026-07-05T04:40:02.428323Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:40:02.428323Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Fermion-axion stars: static solutions and dynamical stability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Davide Guerra, Dimitra Tseneklidou, Fabrizio Di Giovanni, Miquel Miravet-Ten\\'es, Simone Albanesi","submitted_at":"2022-07-13T13:14:12Z","abstract_excerpt":"We construct spherically-symmetric static solutions of the Einstein-Klein-Gordon-Euler system involving a complex scalar field governed by a periodic potential which emerges in models of axion-like particles, and fermionic matter modeled by a perfect fluid with a polytropic equation of state. Such solutions describe gravitationally bound composites of fermions and axions which we dub as fermion-axion stars. Sequences of pure axion-stars in the existence domain may show the presence of multiple stable branches depending on the value of the decay constant parameter in the potential; this reflect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.06174","kind":"arxiv","version":1},"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/2207.06174/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":"2207.06174","created_at":"2026-07-05T04:40:02.428409+00:00"},{"alias_kind":"arxiv_version","alias_value":"2207.06174v1","created_at":"2026-07-05T04:40:02.428409+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.06174","created_at":"2026-07-05T04:40:02.428409+00:00"},{"alias_kind":"pith_short_12","alias_value":"IYEY6BZXEYM7","created_at":"2026-07-05T04:40:02.428409+00:00"},{"alias_kind":"pith_short_16","alias_value":"IYEY6BZXEYM7FT5A","created_at":"2026-07-05T04:40:02.428409+00:00"},{"alias_kind":"pith_short_8","alias_value":"IYEY6BZX","created_at":"2026-07-05T04:40:02.428409+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.06067","citing_title":"Radial spectra and dynamical signatures of excited boson stars","ref_index":38,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB","json":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB.json","graph_json":"https://pith.science/api/pith-number/IYEY6BZXEYM7FT5A6JVI3KRRJB/graph.json","events_json":"https://pith.science/api/pith-number/IYEY6BZXEYM7FT5A6JVI3KRRJB/events.json","paper":"https://pith.science/paper/IYEY6BZX"},"agent_actions":{"view_html":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB","download_json":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB.json","view_paper":"https://pith.science/paper/IYEY6BZX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2207.06174&json=true","fetch_graph":"https://pith.science/api/pith-number/IYEY6BZXEYM7FT5A6JVI3KRRJB/graph.json","fetch_events":"https://pith.science/api/pith-number/IYEY6BZXEYM7FT5A6JVI3KRRJB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB/action/storage_attestation","attest_author":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB/action/author_attestation","sign_citation":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB/action/citation_signature","submit_replication":"https://pith.science/pith/IYEY6BZXEYM7FT5A6JVI3KRRJB/action/replication_record"}},"created_at":"2026-07-05T04:40:02.428409+00:00","updated_at":"2026-07-05T04:40:02.428409+00:00"}