{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:EPB2KLEHU7WFX7OAF3DUUFCX66","short_pith_number":"pith:EPB2KLEH","schema_version":"1.0","canonical_sha256":"23c3a52c87a7ec5bfdc02ec74a1457f7b74fb8149ebe8e8e4160ecd9fa951838","source":{"kind":"arxiv","id":"1707.08521","version":1},"attestation_state":"computed","paper":{"title":"Composite boson description of a low density gas of excitons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"A. E. Golomedov, G. E. Astrakharchik, J. Boronat, Yu. E. Lozovik","submitted_at":"2017-07-26T16:16:19Z","abstract_excerpt":"Ground state properties of a fermionic Coulomb gas are calculated using the fixed-node diffusion Monte Carlo method. The validity of the composite boson description is tested for different densities. We extract the exciton-exciton $s$-wave scattering length by solving the four-body problem in a harmonic trap and mapping the energy to that of two trapped bosons. The equation of state is consistent with the Bogoliubov theory for composite bosons interacting with the obtained $s$-wave scattering length. The perturbative expansion at low density has contributions physically coming from (a) exciton"},"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":"1707.08521","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-07-26T16:16:19Z","cross_cats_sorted":[],"title_canon_sha256":"857af397406ff86c56f6eaf2fc609eaa0d8e1dade2dcf230b4f2d407d88dc794","abstract_canon_sha256":"f929769af3cde4ec3852a751d76769ce5f68ed30dbedc8c42b932bb0345f1c8d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:04.071237Z","signature_b64":"PQZQlM+HyfIrh3WHgWu3NjVq2dMVTseAIEOOpPXTv7Rmp29C9ZcMZrfazIlChKvVtHyuHveeVayrEkitkSXeCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23c3a52c87a7ec5bfdc02ec74a1457f7b74fb8149ebe8e8e4160ecd9fa951838","last_reissued_at":"2026-05-18T00:18:04.070680Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:04.070680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Composite boson description of a low density gas of excitons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"A. E. Golomedov, G. E. Astrakharchik, J. Boronat, Yu. E. Lozovik","submitted_at":"2017-07-26T16:16:19Z","abstract_excerpt":"Ground state properties of a fermionic Coulomb gas are calculated using the fixed-node diffusion Monte Carlo method. The validity of the composite boson description is tested for different densities. We extract the exciton-exciton $s$-wave scattering length by solving the four-body problem in a harmonic trap and mapping the energy to that of two trapped bosons. The equation of state is consistent with the Bogoliubov theory for composite bosons interacting with the obtained $s$-wave scattering length. The perturbative expansion at low density has contributions physically coming from (a) exciton"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.08521","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":""},"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":"1707.08521","created_at":"2026-05-18T00:18:04.070774+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.08521v1","created_at":"2026-05-18T00:18:04.070774+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.08521","created_at":"2026-05-18T00:18:04.070774+00:00"},{"alias_kind":"pith_short_12","alias_value":"EPB2KLEHU7WF","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_16","alias_value":"EPB2KLEHU7WFX7OA","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_8","alias_value":"EPB2KLEH","created_at":"2026-05-18T12:31:12.930513+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66","json":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66.json","graph_json":"https://pith.science/api/pith-number/EPB2KLEHU7WFX7OAF3DUUFCX66/graph.json","events_json":"https://pith.science/api/pith-number/EPB2KLEHU7WFX7OAF3DUUFCX66/events.json","paper":"https://pith.science/paper/EPB2KLEH"},"agent_actions":{"view_html":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66","download_json":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66.json","view_paper":"https://pith.science/paper/EPB2KLEH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.08521&json=true","fetch_graph":"https://pith.science/api/pith-number/EPB2KLEHU7WFX7OAF3DUUFCX66/graph.json","fetch_events":"https://pith.science/api/pith-number/EPB2KLEHU7WFX7OAF3DUUFCX66/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66/action/storage_attestation","attest_author":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66/action/author_attestation","sign_citation":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66/action/citation_signature","submit_replication":"https://pith.science/pith/EPB2KLEHU7WFX7OAF3DUUFCX66/action/replication_record"}},"created_at":"2026-05-18T00:18:04.070774+00:00","updated_at":"2026-05-18T00:18:04.070774+00:00"}