{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZWOTWNAOGFHYQKNYMQV3F4WSMN","short_pith_number":"pith:ZWOTWNAO","canonical_record":{"source":{"id":"1603.05001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-03-16T09:30:45Z","cross_cats_sorted":[],"title_canon_sha256":"f5f39f07fd3ef7f57997d4b3c53d381a7e993b2b8fc46c7501f257c1b68bc55b","abstract_canon_sha256":"f3c94c5e00422dc75f2dcf2747119d593624bec3d92873c788b5a64f32c92f6e"},"schema_version":"1.0"},"canonical_sha256":"cd9d3b340e314f8829b8642bb2f2d26346243029f2e19f827f478c9680bc3272","source":{"kind":"arxiv","id":"1603.05001","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.05001","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"arxiv_version","alias_value":"1603.05001v1","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.05001","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"pith_short_12","alias_value":"ZWOTWNAOGFHY","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZWOTWNAOGFHYQKNY","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZWOTWNAO","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZWOTWNAOGFHYQKNYMQV3F4WSMN","target":"record","payload":{"canonical_record":{"source":{"id":"1603.05001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-03-16T09:30:45Z","cross_cats_sorted":[],"title_canon_sha256":"f5f39f07fd3ef7f57997d4b3c53d381a7e993b2b8fc46c7501f257c1b68bc55b","abstract_canon_sha256":"f3c94c5e00422dc75f2dcf2747119d593624bec3d92873c788b5a64f32c92f6e"},"schema_version":"1.0"},"canonical_sha256":"cd9d3b340e314f8829b8642bb2f2d26346243029f2e19f827f478c9680bc3272","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:17:07.325955Z","signature_b64":"SjKHje8HoYwGPsdHBEA01HDEcwtVpWUt1iVLaqmaOcYiNl8VsCBAiWVn8U6UTAQa8dtB8FOyQvH9XtyuUKOFBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd9d3b340e314f8829b8642bb2f2d26346243029f2e19f827f478c9680bc3272","last_reissued_at":"2026-05-18T01:17:07.325191Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:17:07.325191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.05001","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":"2026-05-18T01:17:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fXJ01djy/sDEYhxHBbN1vYC7M2GC5K/iWOTdz08yK7kG196NW8/ifpgwuXJ0U7A7PZzdGcX7k/uTQTFJkmqUDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T21:09:14.284923Z"},"content_sha256":"b237a17db8b90ec0b3308c7a6cc695468f36e60f8c6c587018ea6eb89ebf37e3","schema_version":"1.0","event_id":"sha256:b237a17db8b90ec0b3308c7a6cc695468f36e60f8c6c587018ea6eb89ebf37e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZWOTWNAOGFHYQKNYMQV3F4WSMN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pseudopotential for the 2D contact interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"G. J. Conduit, L. M. Schonenberg, N. Kongsuwan, R. J. Needs, T. M. Whitehead","submitted_at":"2016-03-16T09:30:45Z","abstract_excerpt":"We propose a smooth pseudopotential for the contact interaction acting between ultracold atoms confined to two dimensions. The pseudopotential reproduces the scattering properties of the repulsive contact interaction up to 200 times more accurately than a hard disk potential, and in the attractive branch gives a 10-fold improvement in accuracy over the square well potential. Furthermore, the new potential enables diffusion Monte Carlo simulations of the ultracold gas to be run 15 times quicker than was previously possible."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.05001","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":"2026-05-18T01:17:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"191vc/mqwb4BGQ5YrNY7Tg6/Gjmgxn6+WoKVoMcI7MpxXlNSyG9gKjPqEUYhbqGPiluJ76ntOmwcyRzz8CMYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T21:09:14.285265Z"},"content_sha256":"bee0b6670672c8a70852e728d2a32bbdfb0d2262b16acaebe4f2cd44e54e4c3b","schema_version":"1.0","event_id":"sha256:bee0b6670672c8a70852e728d2a32bbdfb0d2262b16acaebe4f2cd44e54e4c3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/bundle.json","state_url":"https://pith.science/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/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":"2026-06-22T21:09:14Z","links":{"resolver":"https://pith.science/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN","bundle":"https://pith.science/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/bundle.json","state":"https://pith.science/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZWOTWNAOGFHYQKNYMQV3F4WSMN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZWOTWNAOGFHYQKNYMQV3F4WSMN","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":"f3c94c5e00422dc75f2dcf2747119d593624bec3d92873c788b5a64f32c92f6e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-03-16T09:30:45Z","title_canon_sha256":"f5f39f07fd3ef7f57997d4b3c53d381a7e993b2b8fc46c7501f257c1b68bc55b"},"schema_version":"1.0","source":{"id":"1603.05001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.05001","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"arxiv_version","alias_value":"1603.05001v1","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.05001","created_at":"2026-05-18T01:17:07Z"},{"alias_kind":"pith_short_12","alias_value":"ZWOTWNAOGFHY","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZWOTWNAOGFHYQKNY","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZWOTWNAO","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:bee0b6670672c8a70852e728d2a32bbdfb0d2262b16acaebe4f2cd44e54e4c3b","target":"graph","created_at":"2026-05-18T01:17:07Z","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 propose a smooth pseudopotential for the contact interaction acting between ultracold atoms confined to two dimensions. The pseudopotential reproduces the scattering properties of the repulsive contact interaction up to 200 times more accurately than a hard disk potential, and in the attractive branch gives a 10-fold improvement in accuracy over the square well potential. Furthermore, the new potential enables diffusion Monte Carlo simulations of the ultracold gas to be run 15 times quicker than was previously possible.","authors_text":"G. J. Conduit, L. M. Schonenberg, N. Kongsuwan, R. J. Needs, T. M. Whitehead","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-03-16T09:30:45Z","title":"Pseudopotential for the 2D contact interaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.05001","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:b237a17db8b90ec0b3308c7a6cc695468f36e60f8c6c587018ea6eb89ebf37e3","target":"record","created_at":"2026-05-18T01:17:07Z","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":"f3c94c5e00422dc75f2dcf2747119d593624bec3d92873c788b5a64f32c92f6e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-03-16T09:30:45Z","title_canon_sha256":"f5f39f07fd3ef7f57997d4b3c53d381a7e993b2b8fc46c7501f257c1b68bc55b"},"schema_version":"1.0","source":{"id":"1603.05001","kind":"arxiv","version":1}},"canonical_sha256":"cd9d3b340e314f8829b8642bb2f2d26346243029f2e19f827f478c9680bc3272","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd9d3b340e314f8829b8642bb2f2d26346243029f2e19f827f478c9680bc3272","first_computed_at":"2026-05-18T01:17:07.325191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:07.325191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SjKHje8HoYwGPsdHBEA01HDEcwtVpWUt1iVLaqmaOcYiNl8VsCBAiWVn8U6UTAQa8dtB8FOyQvH9XtyuUKOFBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:07.325955Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.05001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b237a17db8b90ec0b3308c7a6cc695468f36e60f8c6c587018ea6eb89ebf37e3","sha256:bee0b6670672c8a70852e728d2a32bbdfb0d2262b16acaebe4f2cd44e54e4c3b"],"state_sha256":"51c4146083838906bd31547a53e9f70b251717f5dab50965bf14827691b06520"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jw04tgXXCA/u6xR1O3hL6l4iodYNPkyYtlkAzxcIii7osnEa3YhTPLSaTS8PVMMEvpSfMSVDKJHfYJUPs47iDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T21:09:14.287188Z","bundle_sha256":"29f2f23c155b433d5880ca5dfa5c4e037f45e615529ceeda203535cbda10facc"}}