{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QSI4JUKPENKLFX7NBQSQNGESFP","short_pith_number":"pith:QSI4JUKP","canonical_record":{"source":{"id":"1804.06793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-18T15:46:44Z","cross_cats_sorted":["cond-mat.stat-mech","physics.comp-ph"],"title_canon_sha256":"df80d91befc61dce913793894a6e01efca7e59b83eef1a46bd91e75b5ebadee1","abstract_canon_sha256":"efc38eec40bc78e6a6a15568208e715af36ab4e43fdc8d608050e2b4ff5fddca"},"schema_version":"1.0"},"canonical_sha256":"8491c4d14f2354b2dfed0c250698922bebe138e8d87a34ed08621808321b72b2","source":{"kind":"arxiv","id":"1804.06793","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06793","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06793v1","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06793","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"pith_short_12","alias_value":"QSI4JUKPENKL","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QSI4JUKPENKLFX7N","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QSI4JUKP","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QSI4JUKPENKLFX7NBQSQNGESFP","target":"record","payload":{"canonical_record":{"source":{"id":"1804.06793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-18T15:46:44Z","cross_cats_sorted":["cond-mat.stat-mech","physics.comp-ph"],"title_canon_sha256":"df80d91befc61dce913793894a6e01efca7e59b83eef1a46bd91e75b5ebadee1","abstract_canon_sha256":"efc38eec40bc78e6a6a15568208e715af36ab4e43fdc8d608050e2b4ff5fddca"},"schema_version":"1.0"},"canonical_sha256":"8491c4d14f2354b2dfed0c250698922bebe138e8d87a34ed08621808321b72b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:14.635130Z","signature_b64":"GTEDbac0vtkuDld3bhRwai+xA6AnL2L7N08JkBH8oGMgdntFowpXzu574Zrpfopd348KLjPJQMplTFlAY8flAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8491c4d14f2354b2dfed0c250698922bebe138e8d87a34ed08621808321b72b2","last_reissued_at":"2026-05-18T00:09:14.634480Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:14.634480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.06793","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":"2026-05-18T00:09:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fAiKWP1IiKvHnqN5nVGml8Hhqip2Cf96pHsi8xAeyn+7Lw2HppIOfb8gJ97GvX0UxZamEfD9oRoie6DmLJUpAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:50:57.830738Z"},"content_sha256":"719361106587c8f00f9dbc1f767a95801b86c9d8006ef487e72d69712c347ef3","schema_version":"1.0","event_id":"sha256:719361106587c8f00f9dbc1f767a95801b86c9d8006ef487e72d69712c347ef3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QSI4JUKPENKLFX7NBQSQNGESFP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pressure and stress tensor of complex anharmonic crystals within the stochastic self-consistent harmonic approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Francesco Mauri, Ion Errea, Lorenzo Monacelli, Matteo Calandra","submitted_at":"2018-04-18T15:46:44Z","abstract_excerpt":"The self-consisted harmonic approximation (SCHA) allows the computation of free energy of anharmonic crystals considering both quantum and thermal fluctuations. Recently, a stochastic implementation of the SCHA has been developed, tailored for applications that use total energy and forces computed from first principles. In this work, we extend the applicability of the stochastic SCHA to complex crystals with many degrees of freedom, with the optimisation of both the lattice vectors and the atomic positions. To this goal, we provide an expression for the evaluation of the pressure and stress te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06793","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":"2026-05-18T00:09:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fIhZpNzTHBSwl5N+3YWfze7obBf6dRfBF+7IEgw35Wv0CUtObzIGb+cmBFODFh3WUivKDHu6KdfNOJ1Ey2nQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:50:57.831327Z"},"content_sha256":"e825aa80a0ff42a85661f8d24ea527cde85690c7d0abef6516ca09a54797e913","schema_version":"1.0","event_id":"sha256:e825aa80a0ff42a85661f8d24ea527cde85690c7d0abef6516ca09a54797e913"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QSI4JUKPENKLFX7NBQSQNGESFP/bundle.json","state_url":"https://pith.science/pith/QSI4JUKPENKLFX7NBQSQNGESFP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QSI4JUKPENKLFX7NBQSQNGESFP/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":"2026-05-27T19:50:57Z","links":{"resolver":"https://pith.science/pith/QSI4JUKPENKLFX7NBQSQNGESFP","bundle":"https://pith.science/pith/QSI4JUKPENKLFX7NBQSQNGESFP/bundle.json","state":"https://pith.science/pith/QSI4JUKPENKLFX7NBQSQNGESFP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QSI4JUKPENKLFX7NBQSQNGESFP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QSI4JUKPENKLFX7NBQSQNGESFP","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":"efc38eec40bc78e6a6a15568208e715af36ab4e43fdc8d608050e2b4ff5fddca","cross_cats_sorted":["cond-mat.stat-mech","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-18T15:46:44Z","title_canon_sha256":"df80d91befc61dce913793894a6e01efca7e59b83eef1a46bd91e75b5ebadee1"},"schema_version":"1.0","source":{"id":"1804.06793","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06793","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06793v1","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06793","created_at":"2026-05-18T00:09:14Z"},{"alias_kind":"pith_short_12","alias_value":"QSI4JUKPENKL","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QSI4JUKPENKLFX7N","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QSI4JUKP","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:e825aa80a0ff42a85661f8d24ea527cde85690c7d0abef6516ca09a54797e913","target":"graph","created_at":"2026-05-18T00:09:14Z","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 self-consisted harmonic approximation (SCHA) allows the computation of free energy of anharmonic crystals considering both quantum and thermal fluctuations. Recently, a stochastic implementation of the SCHA has been developed, tailored for applications that use total energy and forces computed from first principles. In this work, we extend the applicability of the stochastic SCHA to complex crystals with many degrees of freedom, with the optimisation of both the lattice vectors and the atomic positions. To this goal, we provide an expression for the evaluation of the pressure and stress te","authors_text":"Francesco Mauri, Ion Errea, Lorenzo Monacelli, Matteo Calandra","cross_cats":["cond-mat.stat-mech","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-18T15:46:44Z","title":"Pressure and stress tensor of complex anharmonic crystals within the stochastic self-consistent harmonic approximation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06793","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":"sha256:719361106587c8f00f9dbc1f767a95801b86c9d8006ef487e72d69712c347ef3","target":"record","created_at":"2026-05-18T00:09:14Z","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":"efc38eec40bc78e6a6a15568208e715af36ab4e43fdc8d608050e2b4ff5fddca","cross_cats_sorted":["cond-mat.stat-mech","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-18T15:46:44Z","title_canon_sha256":"df80d91befc61dce913793894a6e01efca7e59b83eef1a46bd91e75b5ebadee1"},"schema_version":"1.0","source":{"id":"1804.06793","kind":"arxiv","version":1}},"canonical_sha256":"8491c4d14f2354b2dfed0c250698922bebe138e8d87a34ed08621808321b72b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8491c4d14f2354b2dfed0c250698922bebe138e8d87a34ed08621808321b72b2","first_computed_at":"2026-05-18T00:09:14.634480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:14.634480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GTEDbac0vtkuDld3bhRwai+xA6AnL2L7N08JkBH8oGMgdntFowpXzu574Zrpfopd348KLjPJQMplTFlAY8flAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:14.635130Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.06793","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:719361106587c8f00f9dbc1f767a95801b86c9d8006ef487e72d69712c347ef3","sha256:e825aa80a0ff42a85661f8d24ea527cde85690c7d0abef6516ca09a54797e913"],"state_sha256":"e2733f5d73a9790a0c3cdbcca66323f8bce0222ea82de1eeda0fa292ab954780"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJRRHciEh8E4l9a57MafavAC5+0ABQejM9VHPt6L5OqCPEvgGvQNteBVBYs03OtA8o5wbvm4bpco7RNoVqULAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:50:57.834788Z","bundle_sha256":"1ef4a2f4924110594702ba9f4575d3bc42c71d7e25b072e4996dd3a2ae884930"}}