{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:XZ26SR6TTAL6HB4L5CZJ42OWOS","short_pith_number":"pith:XZ26SR6T","canonical_record":{"source":{"id":"1606.00066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-31T22:22:46Z","cross_cats_sorted":[],"title_canon_sha256":"9bea21ee8b12da9f769e0f68891a67e19313adfa891e371cc7a07c048c970190","abstract_canon_sha256":"e949531555921f1fee511f3acd9ad70516a55920b71ba7e7a4ba90aff2b73ddd"},"schema_version":"1.0"},"canonical_sha256":"be75e947d39817e3878be8b29e69d6749bbdfd579b89a31572e67a5cb0d6784a","source":{"kind":"arxiv","id":"1606.00066","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.00066","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"arxiv_version","alias_value":"1606.00066v1","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.00066","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"pith_short_12","alias_value":"XZ26SR6TTAL6","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XZ26SR6TTAL6HB4L","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XZ26SR6T","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:XZ26SR6TTAL6HB4L5CZJ42OWOS","target":"record","payload":{"canonical_record":{"source":{"id":"1606.00066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-31T22:22:46Z","cross_cats_sorted":[],"title_canon_sha256":"9bea21ee8b12da9f769e0f68891a67e19313adfa891e371cc7a07c048c970190","abstract_canon_sha256":"e949531555921f1fee511f3acd9ad70516a55920b71ba7e7a4ba90aff2b73ddd"},"schema_version":"1.0"},"canonical_sha256":"be75e947d39817e3878be8b29e69d6749bbdfd579b89a31572e67a5cb0d6784a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:56:20.458125Z","signature_b64":"MjvlNe446PQ3JmjTc9Ddh7oz44c1VSl8vAG4+kBrxT2/tCf96ilCf50hbTYhosxHFjGM9rB8v9v4b9dgpeV3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"be75e947d39817e3878be8b29e69d6749bbdfd579b89a31572e67a5cb0d6784a","last_reissued_at":"2026-05-18T00:56:20.457388Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:56:20.457388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.00066","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:56:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nJGKAqbntCQXgbk2o3IyZ/DJnOKUbHl6sbjDmMTBw+IJbMcq/5E4WQy/pWvIhkwkTcALOKVh89iykxcE+/k4Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T04:05:19.165077Z"},"content_sha256":"15d06ace52239bc9479bcc7bf8b04d4c8d729cac6846f635174053952ec8fb90","schema_version":"1.0","event_id":"sha256:15d06ace52239bc9479bcc7bf8b04d4c8d729cac6846f635174053952ec8fb90"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:XZ26SR6TTAL6HB4L5CZJ42OWOS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How many-body correlations and $\\alpha$-clustering shape $^6$He","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Carolina Romero-Redondo, Guillaume Hupin, Petr Navratil, Sofia Quaglioni","submitted_at":"2016-05-31T22:22:46Z","abstract_excerpt":"The Borromean $^6$He nucleus is an exotic system characterized by two `halo' neutrons orbiting around a compact $^4$He (or $\\alpha$) core, in which the binary subsystems are unbound. The simultaneous reproduction of its small binding energy and extended matter and point-proton radii has been a challenge for {\\em ab initio} theoretical calculations based on traditional bound-state methods. Using soft nucleon-nucleon interactions based on chiral effective field theory potentials, we show that supplementing the model space with $^4$He+$n$+$n$ cluster degrees of freedom largely solves this issue. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.00066","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:56:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G+TblnF3qgMp4V+0cb5DEon2x1LYwv2BXHg5uMq0LZnFnYtiru7W4XxubHD4m5K9m3BFdDGK/WcujUCY0O+bAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T04:05:19.165423Z"},"content_sha256":"72d8d3a07261e5444be0e44c8b3785adbc8ee321cca39f23d6c3719abf39964b","schema_version":"1.0","event_id":"sha256:72d8d3a07261e5444be0e44c8b3785adbc8ee321cca39f23d6c3719abf39964b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/bundle.json","state_url":"https://pith.science/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-20T04:05:19Z","links":{"resolver":"https://pith.science/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS","bundle":"https://pith.science/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/bundle.json","state":"https://pith.science/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XZ26SR6TTAL6HB4L5CZJ42OWOS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:XZ26SR6TTAL6HB4L5CZJ42OWOS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e949531555921f1fee511f3acd9ad70516a55920b71ba7e7a4ba90aff2b73ddd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-31T22:22:46Z","title_canon_sha256":"9bea21ee8b12da9f769e0f68891a67e19313adfa891e371cc7a07c048c970190"},"schema_version":"1.0","source":{"id":"1606.00066","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.00066","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"arxiv_version","alias_value":"1606.00066v1","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.00066","created_at":"2026-05-18T00:56:20Z"},{"alias_kind":"pith_short_12","alias_value":"XZ26SR6TTAL6","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XZ26SR6TTAL6HB4L","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XZ26SR6T","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:72d8d3a07261e5444be0e44c8b3785adbc8ee321cca39f23d6c3719abf39964b","target":"graph","created_at":"2026-05-18T00:56:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The Borromean $^6$He nucleus is an exotic system characterized by two `halo' neutrons orbiting around a compact $^4$He (or $\\alpha$) core, in which the binary subsystems are unbound. The simultaneous reproduction of its small binding energy and extended matter and point-proton radii has been a challenge for {\\em ab initio} theoretical calculations based on traditional bound-state methods. Using soft nucleon-nucleon interactions based on chiral effective field theory potentials, we show that supplementing the model space with $^4$He+$n$+$n$ cluster degrees of freedom largely solves this issue. ","authors_text":"Carolina Romero-Redondo, Guillaume Hupin, Petr Navratil, Sofia Quaglioni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-31T22:22:46Z","title":"How many-body correlations and $\\alpha$-clustering shape $^6$He"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.00066","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:15d06ace52239bc9479bcc7bf8b04d4c8d729cac6846f635174053952ec8fb90","target":"record","created_at":"2026-05-18T00:56:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e949531555921f1fee511f3acd9ad70516a55920b71ba7e7a4ba90aff2b73ddd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-31T22:22:46Z","title_canon_sha256":"9bea21ee8b12da9f769e0f68891a67e19313adfa891e371cc7a07c048c970190"},"schema_version":"1.0","source":{"id":"1606.00066","kind":"arxiv","version":1}},"canonical_sha256":"be75e947d39817e3878be8b29e69d6749bbdfd579b89a31572e67a5cb0d6784a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be75e947d39817e3878be8b29e69d6749bbdfd579b89a31572e67a5cb0d6784a","first_computed_at":"2026-05-18T00:56:20.457388Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:56:20.457388Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MjvlNe446PQ3JmjTc9Ddh7oz44c1VSl8vAG4+kBrxT2/tCf96ilCf50hbTYhosxHFjGM9rB8v9v4b9dgpeV3AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:56:20.458125Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.00066","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15d06ace52239bc9479bcc7bf8b04d4c8d729cac6846f635174053952ec8fb90","sha256:72d8d3a07261e5444be0e44c8b3785adbc8ee321cca39f23d6c3719abf39964b"],"state_sha256":"2daaf4aa7019e14ce89ddd7994ab3175a587964da1e9ac6a1c66c7d4010f5302"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BOAHWg2KBMYNpVc1UYaiLsy9E3eh/gVqs4eXufERqACb88M8pXStj0lW+yA8NHAxQ7/8WDlizrqOeCm3btUACw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T04:05:19.167310Z","bundle_sha256":"204552f2c248477d6427c071fd1155b0c342b2fcc9d4921e05ddfc72f9b78e07"}}