{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:PESVYVAHXCGVL5X2LBYJH23PF7","short_pith_number":"pith:PESVYVAH","canonical_record":{"source":{"id":"1605.01295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2016-05-04T14:35:31Z","cross_cats_sorted":[],"title_canon_sha256":"bc665223477dc939dc8018417c646cf6ea6b9684c1bf6b9c76d116f339e12bcd","abstract_canon_sha256":"68819ef12cd8d61b32056778aacab448c482e9576d5b8f8c13526a82cd0ffafa"},"schema_version":"1.0"},"canonical_sha256":"79255c5407b88d55f6fa587093eb6f2fd9b27862ae9013081bcbb49be444ed06","source":{"kind":"arxiv","id":"1605.01295","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01295","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01295v1","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01295","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"pith_short_12","alias_value":"PESVYVAHXCGV","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PESVYVAHXCGVL5X2","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PESVYVAH","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:PESVYVAHXCGVL5X2LBYJH23PF7","target":"record","payload":{"canonical_record":{"source":{"id":"1605.01295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2016-05-04T14:35:31Z","cross_cats_sorted":[],"title_canon_sha256":"bc665223477dc939dc8018417c646cf6ea6b9684c1bf6b9c76d116f339e12bcd","abstract_canon_sha256":"68819ef12cd8d61b32056778aacab448c482e9576d5b8f8c13526a82cd0ffafa"},"schema_version":"1.0"},"canonical_sha256":"79255c5407b88d55f6fa587093eb6f2fd9b27862ae9013081bcbb49be444ed06","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:03.677988Z","signature_b64":"BCq6EpF9Dw0UDOAN1QVUns/FebzxM7Y9QJAjK6fjG512za84QWvGPwUf/WHVGtqF2ic5GdRS7UOZEsSLQlnYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79255c5407b88d55f6fa587093eb6f2fd9b27862ae9013081bcbb49be444ed06","last_reissued_at":"2026-05-18T01:12:03.677651Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:03.677651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.01295","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":"2026-05-18T01:12:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o9xb3fpp6QX8wkujnaj5MZ4tv1dw8AxvyNmFth+YJU7QdQoV/uzP9ERJO4zQ1s4LjOpVJ1Y9jpJtbQwlDffoAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:28:37.567348Z"},"content_sha256":"4bea27cd22ed0eeea540a49fbb3155a77017d0816ffd50f73d29b42840e5da25","schema_version":"1.0","event_id":"sha256:4bea27cd22ed0eeea540a49fbb3155a77017d0816ffd50f73d29b42840e5da25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:PESVYVAHXCGVL5X2LBYJH23PF7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Roton excitations and the fluid-solid phase transition in superfluid 2D Yukawa Bosons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"D. E. Galli, L. Reatto, M. Motta, S. Molinelli","submitted_at":"2016-05-04T14:35:31Z","abstract_excerpt":"We compute several ground state properties and the dynamical structure factor of a 0-temperature system of Bosons interacting with the 2D screened Coulomb (2D-SC) potential. We resort to the exact shadow path integral ground state (SPIGS) quantum Monte Carlo method to compute the imaginary-time correlation function of the model, and to the genetic algorithm via falsification of theories (GIFT) to retrieve the dynamical structure factor. We provide a detailed comparison of ground state properties and collective excitations of 2D-SC and 4He atoms. The roton energy of the 2D-SC system is an incre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01295","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":"2026-05-18T01:12:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6f3+SYhYqfcmQUtZ/TKA3r+aFWmi2MX3GhWrGRF3J8ZRhbY5MgTJ5N/O7QAq1WPHmYZNx4A4NCh3jWD+hdVBAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:28:37.567697Z"},"content_sha256":"bf99e398c5553d24d98d5917bac4ac7cb50142fef04bdcc837fc4ab81b6fa2aa","schema_version":"1.0","event_id":"sha256:bf99e398c5553d24d98d5917bac4ac7cb50142fef04bdcc837fc4ab81b6fa2aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PESVYVAHXCGVL5X2LBYJH23PF7/bundle.json","state_url":"https://pith.science/pith/PESVYVAHXCGVL5X2LBYJH23PF7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PESVYVAHXCGVL5X2LBYJH23PF7/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":"2026-05-28T06:28:37Z","links":{"resolver":"https://pith.science/pith/PESVYVAHXCGVL5X2LBYJH23PF7","bundle":"https://pith.science/pith/PESVYVAHXCGVL5X2LBYJH23PF7/bundle.json","state":"https://pith.science/pith/PESVYVAHXCGVL5X2LBYJH23PF7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PESVYVAHXCGVL5X2LBYJH23PF7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:PESVYVAHXCGVL5X2LBYJH23PF7","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":"68819ef12cd8d61b32056778aacab448c482e9576d5b8f8c13526a82cd0ffafa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2016-05-04T14:35:31Z","title_canon_sha256":"bc665223477dc939dc8018417c646cf6ea6b9684c1bf6b9c76d116f339e12bcd"},"schema_version":"1.0","source":{"id":"1605.01295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01295","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01295v1","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01295","created_at":"2026-05-18T01:12:03Z"},{"alias_kind":"pith_short_12","alias_value":"PESVYVAHXCGV","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PESVYVAHXCGVL5X2","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PESVYVAH","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:bf99e398c5553d24d98d5917bac4ac7cb50142fef04bdcc837fc4ab81b6fa2aa","target":"graph","created_at":"2026-05-18T01:12:03Z","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 compute several ground state properties and the dynamical structure factor of a 0-temperature system of Bosons interacting with the 2D screened Coulomb (2D-SC) potential. We resort to the exact shadow path integral ground state (SPIGS) quantum Monte Carlo method to compute the imaginary-time correlation function of the model, and to the genetic algorithm via falsification of theories (GIFT) to retrieve the dynamical structure factor. We provide a detailed comparison of ground state properties and collective excitations of 2D-SC and 4He atoms. The roton energy of the 2D-SC system is an incre","authors_text":"D. E. Galli, L. Reatto, M. Motta, S. Molinelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2016-05-04T14:35:31Z","title":"Roton excitations and the fluid-solid phase transition in superfluid 2D Yukawa Bosons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01295","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":"sha256:4bea27cd22ed0eeea540a49fbb3155a77017d0816ffd50f73d29b42840e5da25","target":"record","created_at":"2026-05-18T01:12:03Z","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":"68819ef12cd8d61b32056778aacab448c482e9576d5b8f8c13526a82cd0ffafa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2016-05-04T14:35:31Z","title_canon_sha256":"bc665223477dc939dc8018417c646cf6ea6b9684c1bf6b9c76d116f339e12bcd"},"schema_version":"1.0","source":{"id":"1605.01295","kind":"arxiv","version":1}},"canonical_sha256":"79255c5407b88d55f6fa587093eb6f2fd9b27862ae9013081bcbb49be444ed06","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79255c5407b88d55f6fa587093eb6f2fd9b27862ae9013081bcbb49be444ed06","first_computed_at":"2026-05-18T01:12:03.677651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:03.677651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BCq6EpF9Dw0UDOAN1QVUns/FebzxM7Y9QJAjK6fjG512za84QWvGPwUf/WHVGtqF2ic5GdRS7UOZEsSLQlnYCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:03.677988Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.01295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bea27cd22ed0eeea540a49fbb3155a77017d0816ffd50f73d29b42840e5da25","sha256:bf99e398c5553d24d98d5917bac4ac7cb50142fef04bdcc837fc4ab81b6fa2aa"],"state_sha256":"d0bccb1c1467d5a0a86ecca48fbfd2a5cce2bee526b2c2ee6046877b535440a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcP3I0UKD7LOS0mBZinao4awtCYe309Z8jHlQ8JSt9poAtcCwuLZdvE4+PZhE+wZqNj0aDOsS5TjE7CuasqoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T06:28:37.569761Z","bundle_sha256":"f7fe846a07f9f5f21130127ca85337a799d0e973cccf467922523235ebc00b7d"}}