{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:MX5OPR6FXMQB3JQXAVPX3JLSWP","short_pith_number":"pith:MX5OPR6F","schema_version":"1.0","canonical_sha256":"65fae7c7c5bb201da617055f7da572b3e5f5996dec0d1350e3b402c608758d97","source":{"kind":"arxiv","id":"0812.3901","version":2},"attestation_state":"computed","paper":{"title":"Hydrodynamical N-body simulations of coupled dark energy cosmologies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Garching), Georg Robbers (ITP, Heidelberg), Marco Baldi (MPA, Valeria Pettorino (ITP, Volker Springel (MPA","submitted_at":"2008-12-20T15:03:15Z","abstract_excerpt":"If the accelerated expansion of the Universe at the present epoch is driven by a dark energy scalar field, there may well be a non-trivial coupling between the dark energy and the cold dark matter (CDM) fluid. Such interactions give rise to new features in cosmological structure growth, like an additional long-range attractive force between CDM particles, or variations of the dark matter particle mass with time. We have implemented these effects in the N-body code GADGET-2 and present results of a series of high-resolution N-body simulations where the dark energy component is directly interact"},"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":"0812.3901","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-20T15:03:15Z","cross_cats_sorted":[],"title_canon_sha256":"0762e6afc413290c216d5feffc7abfbbbd9e3b13163d080c9eb86545c7784554","abstract_canon_sha256":"6d4cbd7aa8728a9a27dab09c7e4caecef5a7e87b0c45cff735bba3929c030f68"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:08.643162Z","signature_b64":"P0xXOp7Zz7+6zpXfkmcAGJ5pkKLOqByZNUJsbuklrRnieUS9Ng9i4GAVeQqWjLe50QK3zztM3oAYead0UVmGBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65fae7c7c5bb201da617055f7da572b3e5f5996dec0d1350e3b402c608758d97","last_reissued_at":"2026-05-18T02:35:08.642799Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:08.642799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hydrodynamical N-body simulations of coupled dark energy cosmologies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Garching), Georg Robbers (ITP, Heidelberg), Marco Baldi (MPA, Valeria Pettorino (ITP, Volker Springel (MPA","submitted_at":"2008-12-20T15:03:15Z","abstract_excerpt":"If the accelerated expansion of the Universe at the present epoch is driven by a dark energy scalar field, there may well be a non-trivial coupling between the dark energy and the cold dark matter (CDM) fluid. Such interactions give rise to new features in cosmological structure growth, like an additional long-range attractive force between CDM particles, or variations of the dark matter particle mass with time. We have implemented these effects in the N-body code GADGET-2 and present results of a series of high-resolution N-body simulations where the dark energy component is directly interact"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.3901","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0812.3901","created_at":"2026-05-18T02:35:08.642853+00:00"},{"alias_kind":"arxiv_version","alias_value":"0812.3901v2","created_at":"2026-05-18T02:35:08.642853+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.3901","created_at":"2026-05-18T02:35:08.642853+00:00"},{"alias_kind":"pith_short_12","alias_value":"MX5OPR6FXMQB","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_16","alias_value":"MX5OPR6FXMQB3JQX","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_8","alias_value":"MX5OPR6F","created_at":"2026-05-18T12:25:57.157939+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/MX5OPR6FXMQB3JQXAVPX3JLSWP","json":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP.json","graph_json":"https://pith.science/api/pith-number/MX5OPR6FXMQB3JQXAVPX3JLSWP/graph.json","events_json":"https://pith.science/api/pith-number/MX5OPR6FXMQB3JQXAVPX3JLSWP/events.json","paper":"https://pith.science/paper/MX5OPR6F"},"agent_actions":{"view_html":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP","download_json":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP.json","view_paper":"https://pith.science/paper/MX5OPR6F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0812.3901&json=true","fetch_graph":"https://pith.science/api/pith-number/MX5OPR6FXMQB3JQXAVPX3JLSWP/graph.json","fetch_events":"https://pith.science/api/pith-number/MX5OPR6FXMQB3JQXAVPX3JLSWP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP/action/storage_attestation","attest_author":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP/action/author_attestation","sign_citation":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP/action/citation_signature","submit_replication":"https://pith.science/pith/MX5OPR6FXMQB3JQXAVPX3JLSWP/action/replication_record"}},"created_at":"2026-05-18T02:35:08.642853+00:00","updated_at":"2026-05-18T02:35:08.642853+00:00"}