{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:NKUYDAR67VOODI33GNGP5LB367","short_pith_number":"pith:NKUYDAR6","schema_version":"1.0","canonical_sha256":"6aa981823efd5ce1a37b334cfeac3bf7ed8a20145700092cc9a787eb62527965","source":{"kind":"arxiv","id":"2507.18389","version":1},"attestation_state":"computed","paper":{"title":"Topological dark energy from spacetime foam: A challenge for $\\Lambda$CDM","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Emmanuel N. Saridakis, Fotios K. Anagnostopoulos, Stylianos A. Tsilioukas","submitted_at":"2025-07-24T13:08:33Z","abstract_excerpt":"Using only the standard considerations of spacetime foam and the Euclidean Quantum Gravity techniques known long ago, we result to a model of Topological Dark Energy (TDE) that outperforms the standard $\\Lambda$CDM paradigm with regard to data fitting efficiency. Specifically, it is known that at the foam level, topologically non-trivial solutions such as instantons appear. In the particular case of Einstein-Gauss-Bonnet gravity, we obtain an effective dynamical dark energy term proportional to the instanton density, and the latter can be easily calculated through standard techniques. Hence, w"},"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":"2507.18389","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"gr-qc","submitted_at":"2025-07-24T13:08:33Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"a8169e056356f22988055616c99abd97032cebfa4cd0caadf981c0031a38672f","abstract_canon_sha256":"48ea5e02f6e1dd97816b1ca11edaa8f5bef900effa923379a1e276e9f6650383"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:42:47.276599Z","signature_b64":"ycdZn2tJtTSrONryMbtZ7fstSb6+5u56O1BKHy/H0xMWRaEVZCbPH8Hg+lFOdTcU3DVWBeXBPBCwCHZUrcOaBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6aa981823efd5ce1a37b334cfeac3bf7ed8a20145700092cc9a787eb62527965","last_reissued_at":"2026-07-05T11:42:47.276041Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:42:47.276041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Topological dark energy from spacetime foam: A challenge for $\\Lambda$CDM","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Emmanuel N. Saridakis, Fotios K. Anagnostopoulos, Stylianos A. Tsilioukas","submitted_at":"2025-07-24T13:08:33Z","abstract_excerpt":"Using only the standard considerations of spacetime foam and the Euclidean Quantum Gravity techniques known long ago, we result to a model of Topological Dark Energy (TDE) that outperforms the standard $\\Lambda$CDM paradigm with regard to data fitting efficiency. Specifically, it is known that at the foam level, topologically non-trivial solutions such as instantons appear. In the particular case of Einstein-Gauss-Bonnet gravity, we obtain an effective dynamical dark energy term proportional to the instanton density, and the latter can be easily calculated through standard techniques. Hence, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18389","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/2507.18389/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":"2507.18389","created_at":"2026-07-05T11:42:47.276100+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.18389v1","created_at":"2026-07-05T11:42:47.276100+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18389","created_at":"2026-07-05T11:42:47.276100+00:00"},{"alias_kind":"pith_short_12","alias_value":"NKUYDAR67VOO","created_at":"2026-07-05T11:42:47.276100+00:00"},{"alias_kind":"pith_short_16","alias_value":"NKUYDAR67VOODI33","created_at":"2026-07-05T11:42:47.276100+00:00"},{"alias_kind":"pith_short_8","alias_value":"NKUYDAR6","created_at":"2026-07-05T11:42:47.276100+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/NKUYDAR67VOODI33GNGP5LB367","json":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367.json","graph_json":"https://pith.science/api/pith-number/NKUYDAR67VOODI33GNGP5LB367/graph.json","events_json":"https://pith.science/api/pith-number/NKUYDAR67VOODI33GNGP5LB367/events.json","paper":"https://pith.science/paper/NKUYDAR6"},"agent_actions":{"view_html":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367","download_json":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367.json","view_paper":"https://pith.science/paper/NKUYDAR6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.18389&json=true","fetch_graph":"https://pith.science/api/pith-number/NKUYDAR67VOODI33GNGP5LB367/graph.json","fetch_events":"https://pith.science/api/pith-number/NKUYDAR67VOODI33GNGP5LB367/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367/action/storage_attestation","attest_author":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367/action/author_attestation","sign_citation":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367/action/citation_signature","submit_replication":"https://pith.science/pith/NKUYDAR67VOODI33GNGP5LB367/action/replication_record"}},"created_at":"2026-07-05T11:42:47.276100+00:00","updated_at":"2026-07-05T11:42:47.276100+00:00"}