{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:FBXGA5FZBEQDHWYR6CJ6TB6CJK","short_pith_number":"pith:FBXGA5FZ","canonical_record":{"source":{"id":"1010.3804","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-19T06:02:24Z","cross_cats_sorted":[],"title_canon_sha256":"52b08e0d2675c9b741a5f808294597f040328e9e8e0c69aedfd0ff655c7c8d89","abstract_canon_sha256":"7a0307b5887d9bfc38a9bda523aa1342060ff6f7512e765c845584aa35463c2d"},"schema_version":"1.0"},"canonical_sha256":"286e6074b9092033db11f093e987c24a8e4b6994ea931c9ca7c10f9c1bd6c68e","source":{"kind":"arxiv","id":"1010.3804","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.3804","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"arxiv_version","alias_value":"1010.3804v1","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.3804","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"pith_short_12","alias_value":"FBXGA5FZBEQD","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"FBXGA5FZBEQDHWYR","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"FBXGA5FZ","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:FBXGA5FZBEQDHWYR6CJ6TB6CJK","target":"record","payload":{"canonical_record":{"source":{"id":"1010.3804","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-19T06:02:24Z","cross_cats_sorted":[],"title_canon_sha256":"52b08e0d2675c9b741a5f808294597f040328e9e8e0c69aedfd0ff655c7c8d89","abstract_canon_sha256":"7a0307b5887d9bfc38a9bda523aa1342060ff6f7512e765c845584aa35463c2d"},"schema_version":"1.0"},"canonical_sha256":"286e6074b9092033db11f093e987c24a8e4b6994ea931c9ca7c10f9c1bd6c68e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:56:58.190199Z","signature_b64":"OfhHbpjNIDQPVlCzlLE15nX7RPYDNWW8aE+2ji7eb9d6SSfDHprocc4gffmN16Qo+wmr5GRflmvW3E3MxNQNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"286e6074b9092033db11f093e987c24a8e4b6994ea931c9ca7c10f9c1bd6c68e","last_reissued_at":"2026-05-18T00:56:58.189649Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:56:58.189649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.3804","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":"2026-05-18T00:56:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hA38T//9wxLTzS+H9Euf1jOyb5j0dWecyrg/qg7Qu1I4QOkykp032jprnLZ35vVE8edDc0QbJaEd1AMGmetOAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:56:14.192145Z"},"content_sha256":"9f7e0a8363a0144cf388db544564ad6284f24e9c59dd9f699fa105f8cfcc0227","schema_version":"1.0","event_id":"sha256:9f7e0a8363a0144cf388db544564ad6284f24e9c59dd9f699fa105f8cfcc0227"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:FBXGA5FZBEQDHWYR6CJ6TB6CJK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Quantum Compass Model on the Square and Simple Cubic Lattices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. J. Hamer, J. Oitmaa","submitted_at":"2010-10-19T06:02:24Z","abstract_excerpt":"We use high-temperature series expansions to obtain thermodynamic properties of the quantum compass model, and to investigate the phase transition on the square and simple cubic lattices. On the square lattice we obtain evidence for a phase transition, consistent with recent Monte Carlo results. On the simple cubic lattice the same procedure provides no sign of a transition, and we conjecture that there is no finite temperature transition in this case."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.3804","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":"2026-05-18T00:56:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xweFJhFBuYMUqDC2vJUuwD5GRn0/6OHP49dRpRe60+gUvhG0LNe6hv7yP8yE4q9enCRnAnm1RZcaR2EbsoT3Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:56:14.192495Z"},"content_sha256":"f1543133722bac00d6774604d7fabad3db46a1587243ee976f96589528db7e02","schema_version":"1.0","event_id":"sha256:f1543133722bac00d6774604d7fabad3db46a1587243ee976f96589528db7e02"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/bundle.json","state_url":"https://pith.science/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/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":"2026-06-08T21:56:14Z","links":{"resolver":"https://pith.science/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK","bundle":"https://pith.science/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/bundle.json","state":"https://pith.science/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FBXGA5FZBEQDHWYR6CJ6TB6CJK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:FBXGA5FZBEQDHWYR6CJ6TB6CJK","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":"7a0307b5887d9bfc38a9bda523aa1342060ff6f7512e765c845584aa35463c2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-19T06:02:24Z","title_canon_sha256":"52b08e0d2675c9b741a5f808294597f040328e9e8e0c69aedfd0ff655c7c8d89"},"schema_version":"1.0","source":{"id":"1010.3804","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.3804","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"arxiv_version","alias_value":"1010.3804v1","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.3804","created_at":"2026-05-18T00:56:58Z"},{"alias_kind":"pith_short_12","alias_value":"FBXGA5FZBEQD","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"FBXGA5FZBEQDHWYR","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"FBXGA5FZ","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:f1543133722bac00d6774604d7fabad3db46a1587243ee976f96589528db7e02","target":"graph","created_at":"2026-05-18T00:56:58Z","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 use high-temperature series expansions to obtain thermodynamic properties of the quantum compass model, and to investigate the phase transition on the square and simple cubic lattices. On the square lattice we obtain evidence for a phase transition, consistent with recent Monte Carlo results. On the simple cubic lattice the same procedure provides no sign of a transition, and we conjecture that there is no finite temperature transition in this case.","authors_text":"C. J. Hamer, J. Oitmaa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-19T06:02:24Z","title":"The Quantum Compass Model on the Square and Simple Cubic Lattices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.3804","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":"sha256:9f7e0a8363a0144cf388db544564ad6284f24e9c59dd9f699fa105f8cfcc0227","target":"record","created_at":"2026-05-18T00:56:58Z","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":"7a0307b5887d9bfc38a9bda523aa1342060ff6f7512e765c845584aa35463c2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-19T06:02:24Z","title_canon_sha256":"52b08e0d2675c9b741a5f808294597f040328e9e8e0c69aedfd0ff655c7c8d89"},"schema_version":"1.0","source":{"id":"1010.3804","kind":"arxiv","version":1}},"canonical_sha256":"286e6074b9092033db11f093e987c24a8e4b6994ea931c9ca7c10f9c1bd6c68e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"286e6074b9092033db11f093e987c24a8e4b6994ea931c9ca7c10f9c1bd6c68e","first_computed_at":"2026-05-18T00:56:58.189649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:56:58.189649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OfhHbpjNIDQPVlCzlLE15nX7RPYDNWW8aE+2ji7eb9d6SSfDHprocc4gffmN16Qo+wmr5GRflmvW3E3MxNQNAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:56:58.190199Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.3804","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f7e0a8363a0144cf388db544564ad6284f24e9c59dd9f699fa105f8cfcc0227","sha256:f1543133722bac00d6774604d7fabad3db46a1587243ee976f96589528db7e02"],"state_sha256":"1596ce685ceece7bd1833f505c70d196e19f382dbb28d6a973fd0c542072db1b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xw/8Uk0HW0Nq0bt5Bsw9+HBYw9ed1KpND521UUvKCvCU9yDBx241jUmCIYTjuzZZXJBzxtdLoIh4Vr3EXiTQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T21:56:14.194371Z","bundle_sha256":"06e126427da20fc5b80f36eb4708c500e9b96330f18e0128ad918f507d5af06a"}}