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To solve the many-body problem unitary transformations like the similarity renormalization group (SRG) are often used to soften the interactions.\n  $\\mathbf{Purpose:}$ Two-body densities can be used to illustrate how the SRG eliminates short-range correlations in the wave function. The short-range information can however be recovered by transforming the density operators.\n  $\\mathbf{Method:}$ The many-body problem is solved for $^4$He in the no core shell model (NCSM) with SRG transformed A"},"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":"1506.02237","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-07T08:45:25Z","cross_cats_sorted":[],"title_canon_sha256":"f7d2d63842c586769ecdf0b9d23ed9e424041739effd68b7f4e585778dd97955","abstract_canon_sha256":"b7736ab529a95bd966f36e0cb68810adaa358b26e24e2cad85c4d2c768ec450a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:09.537298Z","signature_b64":"pjL0idtfEoT/tDhd6u+6HzccZyaa5CqLJoLCIHDlgnpnJDmEqET3K026RF9dspGHvOx3gYatSZR4NbOv2lzEAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"351f5bc095c6d0a5df477624aa8cb629531457b23eeb7f3f755a4bb50eaff1f7","last_reissued_at":"2026-05-18T01:35:09.536397Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:09.536397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Short-range correlations in nuclei with similarity renormalization group transformations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Hans Feldmeier, Thomas Neff, Wataru Horiuchi","submitted_at":"2015-06-07T08:45:25Z","abstract_excerpt":"$\\mathbf{Background:}$ Realistic nucleon-nucleon interactions induce short-range correlations in nuclei. 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