{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:SXQKIYW32YGJIME4HUU4EA7ZFW","short_pith_number":"pith:SXQKIYW3","schema_version":"1.0","canonical_sha256":"95e0a462dbd60c94309c3d29c203f92da2858df3a4bd032717a8a43ff3448cb5","source":{"kind":"arxiv","id":"2102.11172","version":3},"attestation_state":"computed","paper":{"title":"In-medium similarity renormalization group with three-body operators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Schwenk, A. Tichai, J. Hoppe, K. Hebeler, M. Heinz","submitted_at":"2021-02-22T16:49:38Z","abstract_excerpt":"Over the past decade the in-medium similarity renormalization group (IMSRG) approach has proven to be a powerful and versatile ab initio many-body method for studying medium-mass nuclei. So far, the IMSRG was limited to the approximation in which only up to two-body operators are incorporated in the renormalization group flow, referred to as the IMSRG(2). In this work, we extend the IMSRG(2) approach to fully include three-body operators yielding the IMSRG(3) approximation. We use a perturbative scaling analysis to estimate the importance of individual terms in this approximation and introduce"},"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":"2102.11172","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-02-22T16:49:38Z","cross_cats_sorted":[],"title_canon_sha256":"ce67c2fa841ffdb25929a0c27b64bc8460d3c1a9d79719c2d791ee8a21475885","abstract_canon_sha256":"0f8167aaca09e7dd738130a93d5d0ab5eb1904d27c053521a5f736ae78dc2b79"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:34:47.170255Z","signature_b64":"IihOs8pxRkS3N3qP32/AiaUhe0cBzKASUa+MOTT8h7pSG4nfuJeCgczDsobCEZqfxStA+PhW47MPFLtOn7ygBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95e0a462dbd60c94309c3d29c203f92da2858df3a4bd032717a8a43ff3448cb5","last_reissued_at":"2026-07-05T02:34:47.169794Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:34:47.169794Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"In-medium similarity renormalization group with three-body operators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Schwenk, A. Tichai, J. Hoppe, K. Hebeler, M. Heinz","submitted_at":"2021-02-22T16:49:38Z","abstract_excerpt":"Over the past decade the in-medium similarity renormalization group (IMSRG) approach has proven to be a powerful and versatile ab initio many-body method for studying medium-mass nuclei. So far, the IMSRG was limited to the approximation in which only up to two-body operators are incorporated in the renormalization group flow, referred to as the IMSRG(2). In this work, we extend the IMSRG(2) approach to fully include three-body operators yielding the IMSRG(3) approximation. We use a perturbative scaling analysis to estimate the importance of individual terms in this approximation and introduce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.11172","kind":"arxiv","version":3},"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/2102.11172/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":"2102.11172","created_at":"2026-07-05T02:34:47.169854+00:00"},{"alias_kind":"arxiv_version","alias_value":"2102.11172v3","created_at":"2026-07-05T02:34:47.169854+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.11172","created_at":"2026-07-05T02:34:47.169854+00:00"},{"alias_kind":"pith_short_12","alias_value":"SXQKIYW32YGJ","created_at":"2026-07-05T02:34:47.169854+00:00"},{"alias_kind":"pith_short_16","alias_value":"SXQKIYW32YGJIME4","created_at":"2026-07-05T02:34:47.169854+00:00"},{"alias_kind":"pith_short_8","alias_value":"SXQKIYW3","created_at":"2026-07-05T02:34:47.169854+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.25019","citing_title":"Ab initio calculations of parity-violating electron scattering off $^{48}$Ca and $^{208}$Pb","ref_index":53,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW","json":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW.json","graph_json":"https://pith.science/api/pith-number/SXQKIYW32YGJIME4HUU4EA7ZFW/graph.json","events_json":"https://pith.science/api/pith-number/SXQKIYW32YGJIME4HUU4EA7ZFW/events.json","paper":"https://pith.science/paper/SXQKIYW3"},"agent_actions":{"view_html":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW","download_json":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW.json","view_paper":"https://pith.science/paper/SXQKIYW3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2102.11172&json=true","fetch_graph":"https://pith.science/api/pith-number/SXQKIYW32YGJIME4HUU4EA7ZFW/graph.json","fetch_events":"https://pith.science/api/pith-number/SXQKIYW32YGJIME4HUU4EA7ZFW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW/action/storage_attestation","attest_author":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW/action/author_attestation","sign_citation":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW/action/citation_signature","submit_replication":"https://pith.science/pith/SXQKIYW32YGJIME4HUU4EA7ZFW/action/replication_record"}},"created_at":"2026-07-05T02:34:47.169854+00:00","updated_at":"2026-07-05T02:34:47.169854+00:00"}