{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PNFVYWB36R2CKPNPNENPOAOJQF","short_pith_number":"pith:PNFVYWB3","canonical_record":{"source":{"id":"1501.07905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-01-30T20:34:59Z","cross_cats_sorted":[],"title_canon_sha256":"7abdd31422d668313f56226ec1da5dc7adc008e027d47d79b95ba225400d0a30","abstract_canon_sha256":"747121df2693aae2660f20077cb41cf1053e40d7d53c50acd78eda1ab72b9e19"},"schema_version":"1.0"},"canonical_sha256":"7b4b5c583bf474253daf691af701c9816761b8591c60e09213b47c9f44e427e2","source":{"kind":"arxiv","id":"1501.07905","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07905","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07905v1","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07905","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"PNFVYWB36R2C","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PNFVYWB36R2CKPNP","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PNFVYWB3","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PNFVYWB36R2CKPNPNENPOAOJQF","target":"record","payload":{"canonical_record":{"source":{"id":"1501.07905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-01-30T20:34:59Z","cross_cats_sorted":[],"title_canon_sha256":"7abdd31422d668313f56226ec1da5dc7adc008e027d47d79b95ba225400d0a30","abstract_canon_sha256":"747121df2693aae2660f20077cb41cf1053e40d7d53c50acd78eda1ab72b9e19"},"schema_version":"1.0"},"canonical_sha256":"7b4b5c583bf474253daf691af701c9816761b8591c60e09213b47c9f44e427e2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:32.907256Z","signature_b64":"H1+wjyT2Su9fwZ9McRD2EXvAkPIu6Nx11+x0EyqrWZKaglTGS21af0SeBTghIsUPCkGEWqzko5xP3kNMfTt6DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b4b5c583bf474253daf691af701c9816761b8591c60e09213b47c9f44e427e2","last_reissued_at":"2026-05-18T01:55:32.906658Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:32.906658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.07905","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":"2026-05-18T01:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KNw788/XKqB44IXDH5JuhNjhAl8igrgNK5dkcQlHN7bDUNl1B1xVAOj+Irk47GtFyNr3ghOBt94x/t3IN0l6Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:46:29.420294Z"},"content_sha256":"105188abb629f712d33f1ae1ba87ff35c23a01b6a795b4015aef26faabc3df87","schema_version":"1.0","event_id":"sha256:105188abb629f712d33f1ae1ba87ff35c23a01b6a795b4015aef26faabc3df87"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PNFVYWB36R2CKPNPNENPOAOJQF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancing student learning of two-level quantum systems with interactive simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ed-ph","authors_text":"Anna Campbell, Antje Kohnle, Charles Baily, Mark J. Paetkau, Natalia Korolkova","submitted_at":"2015-01-30T20:34:59Z","abstract_excerpt":"The QuVis Quantum Mechanics Visualization project aims to address challenges of quantum mechanics instruction through the development of interactive simulations for the learning and teaching of quantum mechanics. In this article, we describe evaluation of simulations focusing on two-level systems developed as part of the Institute of Physics Quantum Physics resources. Simulations are research-based and have been iteratively refined using student feedback in individual observation sessions and in-class trials. We give evidence that these simulations are helping students learn quantum mechanics "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07905","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":"2026-05-18T01:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JCtZVpmVb3VDqz8EzoWx+s3gpLlWS3gFJxuJlKhyMMUPaWC5oND9Gc6nc0OsLf2Asmsk5lMKpPGFKlhdBj6vAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:46:29.421062Z"},"content_sha256":"48d563c5307bd8deb8e9eb2a8d78a0ec29ad76d5df0de52b285e43ad6189fdd7","schema_version":"1.0","event_id":"sha256:48d563c5307bd8deb8e9eb2a8d78a0ec29ad76d5df0de52b285e43ad6189fdd7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PNFVYWB36R2CKPNPNENPOAOJQF/bundle.json","state_url":"https://pith.science/pith/PNFVYWB36R2CKPNPNENPOAOJQF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PNFVYWB36R2CKPNPNENPOAOJQF/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":"2026-05-31T14:46:29Z","links":{"resolver":"https://pith.science/pith/PNFVYWB36R2CKPNPNENPOAOJQF","bundle":"https://pith.science/pith/PNFVYWB36R2CKPNPNENPOAOJQF/bundle.json","state":"https://pith.science/pith/PNFVYWB36R2CKPNPNENPOAOJQF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PNFVYWB36R2CKPNPNENPOAOJQF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PNFVYWB36R2CKPNPNENPOAOJQF","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":"747121df2693aae2660f20077cb41cf1053e40d7d53c50acd78eda1ab72b9e19","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-01-30T20:34:59Z","title_canon_sha256":"7abdd31422d668313f56226ec1da5dc7adc008e027d47d79b95ba225400d0a30"},"schema_version":"1.0","source":{"id":"1501.07905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07905","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07905v1","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07905","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"PNFVYWB36R2C","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PNFVYWB36R2CKPNP","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PNFVYWB3","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:48d563c5307bd8deb8e9eb2a8d78a0ec29ad76d5df0de52b285e43ad6189fdd7","target":"graph","created_at":"2026-05-18T01:55:32Z","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 QuVis Quantum Mechanics Visualization project aims to address challenges of quantum mechanics instruction through the development of interactive simulations for the learning and teaching of quantum mechanics. In this article, we describe evaluation of simulations focusing on two-level systems developed as part of the Institute of Physics Quantum Physics resources. Simulations are research-based and have been iteratively refined using student feedback in individual observation sessions and in-class trials. We give evidence that these simulations are helping students learn quantum mechanics ","authors_text":"Anna Campbell, Antje Kohnle, Charles Baily, Mark J. Paetkau, Natalia Korolkova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-01-30T20:34:59Z","title":"Enhancing student learning of two-level quantum systems with interactive simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07905","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":"sha256:105188abb629f712d33f1ae1ba87ff35c23a01b6a795b4015aef26faabc3df87","target":"record","created_at":"2026-05-18T01:55:32Z","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":"747121df2693aae2660f20077cb41cf1053e40d7d53c50acd78eda1ab72b9e19","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-01-30T20:34:59Z","title_canon_sha256":"7abdd31422d668313f56226ec1da5dc7adc008e027d47d79b95ba225400d0a30"},"schema_version":"1.0","source":{"id":"1501.07905","kind":"arxiv","version":1}},"canonical_sha256":"7b4b5c583bf474253daf691af701c9816761b8591c60e09213b47c9f44e427e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b4b5c583bf474253daf691af701c9816761b8591c60e09213b47c9f44e427e2","first_computed_at":"2026-05-18T01:55:32.906658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:32.906658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H1+wjyT2Su9fwZ9McRD2EXvAkPIu6Nx11+x0EyqrWZKaglTGS21af0SeBTghIsUPCkGEWqzko5xP3kNMfTt6DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:32.907256Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.07905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:105188abb629f712d33f1ae1ba87ff35c23a01b6a795b4015aef26faabc3df87","sha256:48d563c5307bd8deb8e9eb2a8d78a0ec29ad76d5df0de52b285e43ad6189fdd7"],"state_sha256":"b94f88b10ff8a83248ecb7e199b9b6c79ac34725f89a62fe9bf697195f760fd2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1QP4U20AJz2aN1ZSWdBKX2aT9dPZpbGX5E3cid5Kx+YAHvzrYhWiy6CgKUcztq2kI5GzDljfpAohpH3p6vdYCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T14:46:29.424750Z","bundle_sha256":"d98dd57caf7d41384f1950ed379bf812598169581ca835b187b8e01ae36d9215"}}