{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QXS4X4UQRUZW3POMPKQRHSTMSH","short_pith_number":"pith:QXS4X4UQ","canonical_record":{"source":{"id":"1807.07025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-18T16:27:14Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"d1911b45239c095ed974221d03fad52500767238f94ed6d7be1bb3db4f3aaaae","abstract_canon_sha256":"1422cb75852d7a9651826e3c02f2a6004c975c1efdc9668091af24e58275a6a9"},"schema_version":"1.0"},"canonical_sha256":"85e5cbf2908d336dbdcc7aa113ca6c91e59be020daae9905681066b7765421a5","source":{"kind":"arxiv","id":"1807.07025","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.07025","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1807.07025v2","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.07025","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"QXS4X4UQRUZW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QXS4X4UQRUZW3POM","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QXS4X4UQ","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QXS4X4UQRUZW3POMPKQRHSTMSH","target":"record","payload":{"canonical_record":{"source":{"id":"1807.07025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-18T16:27:14Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"d1911b45239c095ed974221d03fad52500767238f94ed6d7be1bb3db4f3aaaae","abstract_canon_sha256":"1422cb75852d7a9651826e3c02f2a6004c975c1efdc9668091af24e58275a6a9"},"schema_version":"1.0"},"canonical_sha256":"85e5cbf2908d336dbdcc7aa113ca6c91e59be020daae9905681066b7765421a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:04.441691Z","signature_b64":"wTsGEyjFya6o4XtndG11CX1NiNG5jX1edKH2dgCJxKgEKjC/bQOxPjwpTJl+qeM3K9n5CxRNCB82b5J6N1wRCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85e5cbf2908d336dbdcc7aa113ca6c91e59be020daae9905681066b7765421a5","last_reissued_at":"2026-05-17T23:58:04.441183Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:04.441183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.07025","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3EjDxh9dHa5RTLpDZIDJ+x2zch8syGRc5pq2KqOhwZcLTuGXbKlCb08hOmsKhRDjyVwPUY6uhJAYqyffsp3+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:46:46.179748Z"},"content_sha256":"3a40fba6b104f9166735df8204fcd23bf8577421e9e8c6e6698634dfa2711fba","schema_version":"1.0","event_id":"sha256:3a40fba6b104f9166735df8204fcd23bf8577421e9e8c6e6698634dfa2711fba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QXS4X4UQRUZW3POMPKQRHSTMSH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hybrid-Monte-Carlo study of competing order in the extended fermionic Hubbard model on the hexagonal lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat"],"primary_cat":"cond-mat.str-el","authors_text":"Dominik Smith, Lorenz von Smekal, Maksim Ulybyshev, Pavel Buividovich","submitted_at":"2018-07-18T16:27:14Z","abstract_excerpt":"Using first-principle Hybrid-Monte-Carlo (HMC) simulations, we carry out an unbiased study of the competition between spin-density wave (SDW) and charge-density wave (CDW) order in the extended Hubbard model on the two dimensional hexagonal lattice at half filling. We determine the phase diagram in the space of on-site and nearest-neighbor couplings $U$ and $V$ in the region $V<U/3$, which can be simulated without a fermion sign problem, and find that a transition from semimetal to a SDW phase occurs at sufficiently large $U$ for basically all $V$. Tracing the corresponding phase boundary from"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.07025","kind":"arxiv","version":2},"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":"2026-05-17T23:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cDTGly6TFCoXdhAh2Do+FQHn5bxs6vGev1TJQNX73U33T5AcWEFoP09AMCndB0P5irDSoG7glNYBUgNFlYKHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:46:46.180100Z"},"content_sha256":"4096d14911a6ac96db0241e3dad0e03fd893252076ef51726cc21c77149ddb7e","schema_version":"1.0","event_id":"sha256:4096d14911a6ac96db0241e3dad0e03fd893252076ef51726cc21c77149ddb7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/bundle.json","state_url":"https://pith.science/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/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":"2026-05-27T19:46:46Z","links":{"resolver":"https://pith.science/pith/QXS4X4UQRUZW3POMPKQRHSTMSH","bundle":"https://pith.science/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/bundle.json","state":"https://pith.science/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QXS4X4UQRUZW3POMPKQRHSTMSH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QXS4X4UQRUZW3POMPKQRHSTMSH","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":"1422cb75852d7a9651826e3c02f2a6004c975c1efdc9668091af24e58275a6a9","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-18T16:27:14Z","title_canon_sha256":"d1911b45239c095ed974221d03fad52500767238f94ed6d7be1bb3db4f3aaaae"},"schema_version":"1.0","source":{"id":"1807.07025","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.07025","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1807.07025v2","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.07025","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"QXS4X4UQRUZW","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QXS4X4UQRUZW3POM","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QXS4X4UQ","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:4096d14911a6ac96db0241e3dad0e03fd893252076ef51726cc21c77149ddb7e","target":"graph","created_at":"2026-05-17T23:58:04Z","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":"Using first-principle Hybrid-Monte-Carlo (HMC) simulations, we carry out an unbiased study of the competition between spin-density wave (SDW) and charge-density wave (CDW) order in the extended Hubbard model on the two dimensional hexagonal lattice at half filling. We determine the phase diagram in the space of on-site and nearest-neighbor couplings $U$ and $V$ in the region $V<U/3$, which can be simulated without a fermion sign problem, and find that a transition from semimetal to a SDW phase occurs at sufficiently large $U$ for basically all $V$. Tracing the corresponding phase boundary from","authors_text":"Dominik Smith, Lorenz von Smekal, Maksim Ulybyshev, Pavel Buividovich","cross_cats":["hep-lat"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-18T16:27:14Z","title":"Hybrid-Monte-Carlo study of competing order in the extended fermionic Hubbard model on the hexagonal lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.07025","kind":"arxiv","version":2},"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":"sha256:3a40fba6b104f9166735df8204fcd23bf8577421e9e8c6e6698634dfa2711fba","target":"record","created_at":"2026-05-17T23:58:04Z","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":"1422cb75852d7a9651826e3c02f2a6004c975c1efdc9668091af24e58275a6a9","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-07-18T16:27:14Z","title_canon_sha256":"d1911b45239c095ed974221d03fad52500767238f94ed6d7be1bb3db4f3aaaae"},"schema_version":"1.0","source":{"id":"1807.07025","kind":"arxiv","version":2}},"canonical_sha256":"85e5cbf2908d336dbdcc7aa113ca6c91e59be020daae9905681066b7765421a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85e5cbf2908d336dbdcc7aa113ca6c91e59be020daae9905681066b7765421a5","first_computed_at":"2026-05-17T23:58:04.441183Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:04.441183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wTsGEyjFya6o4XtndG11CX1NiNG5jX1edKH2dgCJxKgEKjC/bQOxPjwpTJl+qeM3K9n5CxRNCB82b5J6N1wRCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:04.441691Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.07025","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a40fba6b104f9166735df8204fcd23bf8577421e9e8c6e6698634dfa2711fba","sha256:4096d14911a6ac96db0241e3dad0e03fd893252076ef51726cc21c77149ddb7e"],"state_sha256":"a3bb27d4d6fb90bd17f85fce03aeb40d7c8830667b1e402d5a37f0c1ed83e7b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AxcA297Yz0ftqdW3GAE9fskuV4LdjDlByr8htp+mlVpxcg3fwuTX0fqV+7uoqtQRJQtPrTqm2Ax4OTD4WvctAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:46:46.183261Z","bundle_sha256":"7ba0acfc2dc961b1ec28eb3eae11fc6f9b28104699df7c11e996bdb3c35d464f"}}