{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6IZVFFUDCIQI6ARH5XBHOJWP5V","short_pith_number":"pith:6IZVFFUD","canonical_record":{"source":{"id":"1507.08035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-29T06:57:43Z","cross_cats_sorted":[],"title_canon_sha256":"68b998a8a0758bd1e3273e18f1cf74e629182c1f6ef5621024e31b3de5801d8e","abstract_canon_sha256":"5c99a326b2c3115577766c9a77f4daf9927e7c4284bb98f5aa59d2a1f016f3d6"},"schema_version":"1.0"},"canonical_sha256":"f23352968312208f0227edc27726cfed718704e25f140e10011ec147f050b588","source":{"kind":"arxiv","id":"1507.08035","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08035","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08035v1","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08035","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"pith_short_12","alias_value":"6IZVFFUDCIQI","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6IZVFFUDCIQI6ARH","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6IZVFFUD","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6IZVFFUDCIQI6ARH5XBHOJWP5V","target":"record","payload":{"canonical_record":{"source":{"id":"1507.08035","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-29T06:57:43Z","cross_cats_sorted":[],"title_canon_sha256":"68b998a8a0758bd1e3273e18f1cf74e629182c1f6ef5621024e31b3de5801d8e","abstract_canon_sha256":"5c99a326b2c3115577766c9a77f4daf9927e7c4284bb98f5aa59d2a1f016f3d6"},"schema_version":"1.0"},"canonical_sha256":"f23352968312208f0227edc27726cfed718704e25f140e10011ec147f050b588","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:53.052635Z","signature_b64":"fWvtkU0HzghRBGP7NoYvzgqGynDXXgT7X6TCbDyfuY9tY+vFQW/Ohvn2XYvPwoKYRNPFegsoPojMC2VnZUDjDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f23352968312208f0227edc27726cfed718704e25f140e10011ec147f050b588","last_reissued_at":"2026-05-18T01:28:53.051968Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:53.051968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.08035","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":"2026-05-18T01:28:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p1G653S+PmF6UAXfm8jbwHkiXnClbd5YJkZ7bMBeM+6Q8HpNtdymWALLp5klPNCtc1fA8o3tZM7gvsviGhldAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:16:20.379080Z"},"content_sha256":"342c15f3fdce3e091b5d884d22b59db382447e456182d6ef67bc98c03da2abad","schema_version":"1.0","event_id":"sha256:342c15f3fdce3e091b5d884d22b59db382447e456182d6ef67bc98c03da2abad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6IZVFFUDCIQI6ARH5XBHOJWP5V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nuclear shape coexistence in Po isotopes: An interacting boson model study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J.E. Garcia-Ramos, K. Heyde","submitted_at":"2015-07-29T06:57:43Z","abstract_excerpt":"Background: The lead region, Po, Pb, Hg, and Pt, shows up the presence of coexisting structures having different deformation and corresponding to different particle-hole configurations in the Shell Model language.\n  Purpose: We intend to study the importance of configuration mixing in the understanding of the nuclear structure of even-even Po isotopes, where the shape coexistence phenomena are not clear enough.\n  Method: We study in detail a long chain of polonium isotopes, 190-208Po, using the interacting boson model with configuration mixing (IBM-CM). We fix the parameters of the Hamiltonian"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08035","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":"2026-05-18T01:28:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"scBQbfuC/d2937qncjg1SDANrKzKE9Ved/fhda0c4Bx8eA4u/cNECHZSdUMALggly88lLu7/BhNPXknH1AnYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:16:20.379647Z"},"content_sha256":"64465cccdf0eb9d61c976eb73e01a52a86ffd615549169cf74ff2a4e19a696a7","schema_version":"1.0","event_id":"sha256:64465cccdf0eb9d61c976eb73e01a52a86ffd615549169cf74ff2a4e19a696a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/bundle.json","state_url":"https://pith.science/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/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":"2026-06-04T18:16:20Z","links":{"resolver":"https://pith.science/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V","bundle":"https://pith.science/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/bundle.json","state":"https://pith.science/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6IZVFFUDCIQI6ARH5XBHOJWP5V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6IZVFFUDCIQI6ARH5XBHOJWP5V","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":"5c99a326b2c3115577766c9a77f4daf9927e7c4284bb98f5aa59d2a1f016f3d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-29T06:57:43Z","title_canon_sha256":"68b998a8a0758bd1e3273e18f1cf74e629182c1f6ef5621024e31b3de5801d8e"},"schema_version":"1.0","source":{"id":"1507.08035","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08035","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08035v1","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08035","created_at":"2026-05-18T01:28:53Z"},{"alias_kind":"pith_short_12","alias_value":"6IZVFFUDCIQI","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6IZVFFUDCIQI6ARH","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6IZVFFUD","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:64465cccdf0eb9d61c976eb73e01a52a86ffd615549169cf74ff2a4e19a696a7","target":"graph","created_at":"2026-05-18T01:28:53Z","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":"Background: The lead region, Po, Pb, Hg, and Pt, shows up the presence of coexisting structures having different deformation and corresponding to different particle-hole configurations in the Shell Model language.\n  Purpose: We intend to study the importance of configuration mixing in the understanding of the nuclear structure of even-even Po isotopes, where the shape coexistence phenomena are not clear enough.\n  Method: We study in detail a long chain of polonium isotopes, 190-208Po, using the interacting boson model with configuration mixing (IBM-CM). We fix the parameters of the Hamiltonian","authors_text":"J.E. Garcia-Ramos, K. Heyde","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-29T06:57:43Z","title":"Nuclear shape coexistence in Po isotopes: An interacting boson model study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08035","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":"sha256:342c15f3fdce3e091b5d884d22b59db382447e456182d6ef67bc98c03da2abad","target":"record","created_at":"2026-05-18T01:28:53Z","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":"5c99a326b2c3115577766c9a77f4daf9927e7c4284bb98f5aa59d2a1f016f3d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-07-29T06:57:43Z","title_canon_sha256":"68b998a8a0758bd1e3273e18f1cf74e629182c1f6ef5621024e31b3de5801d8e"},"schema_version":"1.0","source":{"id":"1507.08035","kind":"arxiv","version":1}},"canonical_sha256":"f23352968312208f0227edc27726cfed718704e25f140e10011ec147f050b588","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f23352968312208f0227edc27726cfed718704e25f140e10011ec147f050b588","first_computed_at":"2026-05-18T01:28:53.051968Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:53.051968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fWvtkU0HzghRBGP7NoYvzgqGynDXXgT7X6TCbDyfuY9tY+vFQW/Ohvn2XYvPwoKYRNPFegsoPojMC2VnZUDjDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:53.052635Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.08035","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:342c15f3fdce3e091b5d884d22b59db382447e456182d6ef67bc98c03da2abad","sha256:64465cccdf0eb9d61c976eb73e01a52a86ffd615549169cf74ff2a4e19a696a7"],"state_sha256":"df32466cc8236e791cacae846f5545809824521e6107b422a239e8e26f278871"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J819a6qLsDf6BqmzdasBBNmVsqBUduSJ1YJ0yiwEqOHcKh/u5oOeKcS6NVpY7DhJ1kmN5SuMJEKJXjYzo845CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:16:20.383065Z","bundle_sha256":"fbc7add2da8f7388ff4575a6a99061bf4b404ad34329a17466055b37bb4371d4"}}