{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PF32ZKQVONTAR4GLB5FSLKM35W","short_pith_number":"pith:PF32ZKQV","canonical_record":{"source":{"id":"1905.00511","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-05-01T21:53:28Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"454b90b1ccd253344f58563e931fd1cce1e4cc42d65a0d72c6e539953f1e4c0a","abstract_canon_sha256":"7f1faf3492b06e50e5390616273684b1b28758a601ced7552dcd00a3d7e515d2"},"schema_version":"1.0"},"canonical_sha256":"7977acaa15736608f0cb0f4b25a99beda610a78cccc9c01ce1bde6d669b13f6f","source":{"kind":"arxiv","id":"1905.00511","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00511","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00511v1","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00511","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"pith_short_12","alias_value":"PF32ZKQVONTA","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PF32ZKQVONTAR4GL","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PF32ZKQV","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PF32ZKQVONTAR4GLB5FSLKM35W","target":"record","payload":{"canonical_record":{"source":{"id":"1905.00511","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-05-01T21:53:28Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"454b90b1ccd253344f58563e931fd1cce1e4cc42d65a0d72c6e539953f1e4c0a","abstract_canon_sha256":"7f1faf3492b06e50e5390616273684b1b28758a601ced7552dcd00a3d7e515d2"},"schema_version":"1.0"},"canonical_sha256":"7977acaa15736608f0cb0f4b25a99beda610a78cccc9c01ce1bde6d669b13f6f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:43.866926Z","signature_b64":"MfCu6nMChR0XRYIz1CnSeDow3OJN+zaCXSUd2rykUjIoT5VCmoYDqnIEMbpSk7yPi6j9vs2jDTNosJu7H9IMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7977acaa15736608f0cb0f4b25a99beda610a78cccc9c01ce1bde6d669b13f6f","last_reissued_at":"2026-05-17T23:39:43.866156Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:43.866156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.00511","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":"2026-05-17T23:39:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A0nAXoWrPB7xW8Y1ZIMCb9HymE2SetCSi0FgTT/fnsxKVDJGIFw0RTMqTjOFeCmMXekuRtpWpIKN3RaM6wRxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:52:03.389273Z"},"content_sha256":"e7e76a6dd8873c8be977436fd22d95f05a421be66a00a360fdc393fc50c750b0","schema_version":"1.0","event_id":"sha256:e7e76a6dd8873c8be977436fd22d95f05a421be66a00a360fdc393fc50c750b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PF32ZKQVONTAR4GLB5FSLKM35W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hamiltonian symmetries in auxiliary-field quantum Monte Carlo calculations for electronic structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.comp-ph","authors_text":"Garnet Kin-Lic Chan, Mario Motta, Shiwei Zhang","submitted_at":"2019-05-01T21:53:28Z","abstract_excerpt":"We describe how to incorporate symmetries of the Hamiltonian into auxiliary-field quantum Monte Carlo calculations (AFQMC). Focusing on the case of Abelian symmetries, we show that the computational cost of most steps of an AFQMC calculation is reduced by $N_k^{-1}$, where $N_k$ is the number of irreducible representations of the symmetry group. We apply the formalism to a molecular system as well as to several crystalline solids. In the latter case, the lattice translational group provides increasing savings as the number of k points is increased, which is important in enabling calculations t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00511","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":"2026-05-17T23:39:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oxOtnsLTSQZK7BbwIZco6UCn/SCYecbzBAn5aD/Ilgf3kv8I+tn2hIMcYqy0yDK1TWgLzWRflujp1y4z06zPAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:52:03.389678Z"},"content_sha256":"714121b2bf5581ab2dfbf5a6fefd385a3ad795e23c54c269afb250929a1132e5","schema_version":"1.0","event_id":"sha256:714121b2bf5581ab2dfbf5a6fefd385a3ad795e23c54c269afb250929a1132e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PF32ZKQVONTAR4GLB5FSLKM35W/bundle.json","state_url":"https://pith.science/pith/PF32ZKQVONTAR4GLB5FSLKM35W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PF32ZKQVONTAR4GLB5FSLKM35W/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":"2026-05-29T17:52:03Z","links":{"resolver":"https://pith.science/pith/PF32ZKQVONTAR4GLB5FSLKM35W","bundle":"https://pith.science/pith/PF32ZKQVONTAR4GLB5FSLKM35W/bundle.json","state":"https://pith.science/pith/PF32ZKQVONTAR4GLB5FSLKM35W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PF32ZKQVONTAR4GLB5FSLKM35W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PF32ZKQVONTAR4GLB5FSLKM35W","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":"7f1faf3492b06e50e5390616273684b1b28758a601ced7552dcd00a3d7e515d2","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-05-01T21:53:28Z","title_canon_sha256":"454b90b1ccd253344f58563e931fd1cce1e4cc42d65a0d72c6e539953f1e4c0a"},"schema_version":"1.0","source":{"id":"1905.00511","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.00511","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"arxiv_version","alias_value":"1905.00511v1","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00511","created_at":"2026-05-17T23:39:43Z"},{"alias_kind":"pith_short_12","alias_value":"PF32ZKQVONTA","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PF32ZKQVONTAR4GL","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PF32ZKQV","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:714121b2bf5581ab2dfbf5a6fefd385a3ad795e23c54c269afb250929a1132e5","target":"graph","created_at":"2026-05-17T23:39:43Z","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":"We describe how to incorporate symmetries of the Hamiltonian into auxiliary-field quantum Monte Carlo calculations (AFQMC). Focusing on the case of Abelian symmetries, we show that the computational cost of most steps of an AFQMC calculation is reduced by $N_k^{-1}$, where $N_k$ is the number of irreducible representations of the symmetry group. We apply the formalism to a molecular system as well as to several crystalline solids. In the latter case, the lattice translational group provides increasing savings as the number of k points is increased, which is important in enabling calculations t","authors_text":"Garnet Kin-Lic Chan, Mario Motta, Shiwei Zhang","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-05-01T21:53:28Z","title":"Hamiltonian symmetries in auxiliary-field quantum Monte Carlo calculations for electronic structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00511","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:e7e76a6dd8873c8be977436fd22d95f05a421be66a00a360fdc393fc50c750b0","target":"record","created_at":"2026-05-17T23:39:43Z","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":"7f1faf3492b06e50e5390616273684b1b28758a601ced7552dcd00a3d7e515d2","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-05-01T21:53:28Z","title_canon_sha256":"454b90b1ccd253344f58563e931fd1cce1e4cc42d65a0d72c6e539953f1e4c0a"},"schema_version":"1.0","source":{"id":"1905.00511","kind":"arxiv","version":1}},"canonical_sha256":"7977acaa15736608f0cb0f4b25a99beda610a78cccc9c01ce1bde6d669b13f6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7977acaa15736608f0cb0f4b25a99beda610a78cccc9c01ce1bde6d669b13f6f","first_computed_at":"2026-05-17T23:39:43.866156Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:43.866156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MfCu6nMChR0XRYIz1CnSeDow3OJN+zaCXSUd2rykUjIoT5VCmoYDqnIEMbpSk7yPi6j9vs2jDTNosJu7H9IMBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:43.866926Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.00511","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7e76a6dd8873c8be977436fd22d95f05a421be66a00a360fdc393fc50c750b0","sha256:714121b2bf5581ab2dfbf5a6fefd385a3ad795e23c54c269afb250929a1132e5"],"state_sha256":"bc01d25751a1af4c2f85d4b06addc70922bc43a3858b53cb5a45808c1d2b4ff1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zVytqRMFh6uZrp32LTnMueY2twoasDTo7cMLzq/n+BFxfuVA2pioRyxX2tTPW7Vvdj6sDTfUhIm4JyqX6ETbBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:52:03.392656Z","bundle_sha256":"024177aed03d9b0cd7049960d061ae5aec8c045fa1f6b90e51c943d33b9069d3"}}