{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:T4GA27R3CQAQFI4IV22BS4LGTM","short_pith_number":"pith:T4GA27R3","schema_version":"1.0","canonical_sha256":"9f0c0d7e3b140102a388aeb41971669b24146a4549d3139dc4d5b94101983828","source":{"kind":"arxiv","id":"2505.04505","version":2},"attestation_state":"computed","paper":{"title":"A disturbance in the force. How force fluctuations hinder dynamical friction and induce core stalling","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.plasm-ph"],"primary_cat":"astro-ph.GA","authors_text":"Bruno Marcos, Pierfrancesco Di Cintio","submitted_at":"2025-05-07T15:25:59Z","abstract_excerpt":"Dynamical friction is an important phenomena in stellar dynamics resulting in the slowing down of a test particle upon many two-body scatters with background particles. Chandrasekhar's original formulation, developed for idealized infinite and homogeneous systems, has been found to be sufficiently accurate even in models of finite extent and radially dependent density profiles. However, in some cases $N-$body simulations evidenced a breakdown of Chandrasekhar's formalism. In particular, in the case of cored stellar systems, the analytical predictions underestimate the rate of in-fall of the te"},"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":"2505.04505","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-05-07T15:25:59Z","cross_cats_sorted":["cond-mat.stat-mech","physics.plasm-ph"],"title_canon_sha256":"2e5d89ab700081e4c8efd85be0bc6351d05ce903a312fe9082ac2554afe0ba5e","abstract_canon_sha256":"bce4b8aec3f69d94cd123db9f086c0bb458e987a1ec1fe5f53d532c05b26e614"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:59:13.893724Z","signature_b64":"D+V5yCzxy6fqCnn3iKyapKDjVNOeR9yUnXvhp/nxHLgdficcmEDk/x2S0vQuh00kVvjW19dWZDrx57/y7hAUBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f0c0d7e3b140102a388aeb41971669b24146a4549d3139dc4d5b94101983828","last_reissued_at":"2026-07-05T11:59:13.893270Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:59:13.893270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A disturbance in the force. How force fluctuations hinder dynamical friction and induce core stalling","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.plasm-ph"],"primary_cat":"astro-ph.GA","authors_text":"Bruno Marcos, Pierfrancesco Di Cintio","submitted_at":"2025-05-07T15:25:59Z","abstract_excerpt":"Dynamical friction is an important phenomena in stellar dynamics resulting in the slowing down of a test particle upon many two-body scatters with background particles. Chandrasekhar's original formulation, developed for idealized infinite and homogeneous systems, has been found to be sufficiently accurate even in models of finite extent and radially dependent density profiles. However, in some cases $N-$body simulations evidenced a breakdown of Chandrasekhar's formalism. In particular, in the case of cored stellar systems, the analytical predictions underestimate the rate of in-fall of the te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.04505","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/2505.04505/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":"2505.04505","created_at":"2026-07-05T11:59:13.893332+00:00"},{"alias_kind":"arxiv_version","alias_value":"2505.04505v2","created_at":"2026-07-05T11:59:13.893332+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.04505","created_at":"2026-07-05T11:59:13.893332+00:00"},{"alias_kind":"pith_short_12","alias_value":"T4GA27R3CQAQ","created_at":"2026-07-05T11:59:13.893332+00:00"},{"alias_kind":"pith_short_16","alias_value":"T4GA27R3CQAQFI4I","created_at":"2026-07-05T11:59:13.893332+00:00"},{"alias_kind":"pith_short_8","alias_value":"T4GA27R3","created_at":"2026-07-05T11:59:13.893332+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.05580","citing_title":"The Broken Similarity: Sinking and Merging of Dark Matter Subhalos Across Hierarchical Levels","ref_index":51,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM","json":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM.json","graph_json":"https://pith.science/api/pith-number/T4GA27R3CQAQFI4IV22BS4LGTM/graph.json","events_json":"https://pith.science/api/pith-number/T4GA27R3CQAQFI4IV22BS4LGTM/events.json","paper":"https://pith.science/paper/T4GA27R3"},"agent_actions":{"view_html":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM","download_json":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM.json","view_paper":"https://pith.science/paper/T4GA27R3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2505.04505&json=true","fetch_graph":"https://pith.science/api/pith-number/T4GA27R3CQAQFI4IV22BS4LGTM/graph.json","fetch_events":"https://pith.science/api/pith-number/T4GA27R3CQAQFI4IV22BS4LGTM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM/action/storage_attestation","attest_author":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM/action/author_attestation","sign_citation":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM/action/citation_signature","submit_replication":"https://pith.science/pith/T4GA27R3CQAQFI4IV22BS4LGTM/action/replication_record"}},"created_at":"2026-07-05T11:59:13.893332+00:00","updated_at":"2026-07-05T11:59:13.893332+00:00"}