{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:LX776P4I6CEIMEUBST73SODPJO","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":"ed613b27a8dedce9eefcb9f9ce357e0add488e2bb17f64b4dfc484b405b14300","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-18T13:47:09Z","title_canon_sha256":"d5c78766f1096dafc0036b14688d2cf781351c06c9fe9c0ffcd53b466c61df55"},"schema_version":"1.0","source":{"id":"0807.2977","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.2977","created_at":"2026-05-18T03:24:42Z"},{"alias_kind":"arxiv_version","alias_value":"0807.2977v1","created_at":"2026-05-18T03:24:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.2977","created_at":"2026-05-18T03:24:42Z"},{"alias_kind":"pith_short_12","alias_value":"LX776P4I6CEI","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"LX776P4I6CEIMEUB","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"LX776P4I","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:0dc0e21b3c07f36406a60feb319883a4660a8429bfb66ac3ec0fa1bc99a7892d","target":"graph","created_at":"2026-05-18T03:24:42Z","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":"Inspired by the lattice structure of the unhydrated variant of the superconducting material Na$_x$CoO$_2 \\cdot$yH$_2$O at $ x = {1/3}$, we study the $t$-$J$ model on a honeycomb lattice by using an efficient loop-cluster algorithm. The low-energy physics of the undoped system and of the single hole sector is described by a systematic low-energy effective field theory. The staggered magnetization per spin $\\widetilde{{\\cal M}}_s = 0.2688(3)$, the spin stiffness $\\rho_s = 0.102(2) J$, the spin wave velocity $c= 1.297(16) J a$, and the kinetic mass $M'$ of a hole are obtained by fitting the numer","authors_text":"F.-J. Jiang, F. K\\\"ampfer, M. Nyfeler, U.-J. Wiese","cross_cats":["hep-lat"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-18T13:47:09Z","title":"Loop-Cluster Simulation of the $t$-$J$ Model on the Honeycomb Lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.2977","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":"sha256:8be1c968745baf5673c1e6410b1ff9ea411aa7e17d8e29403315b9a0b2421066","target":"record","created_at":"2026-05-18T03:24:42Z","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":"ed613b27a8dedce9eefcb9f9ce357e0add488e2bb17f64b4dfc484b405b14300","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-07-18T13:47:09Z","title_canon_sha256":"d5c78766f1096dafc0036b14688d2cf781351c06c9fe9c0ffcd53b466c61df55"},"schema_version":"1.0","source":{"id":"0807.2977","kind":"arxiv","version":1}},"canonical_sha256":"5dffff3f88f08886128194ffb9386f4b92879142fcc37c1f054717eff8a886eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5dffff3f88f08886128194ffb9386f4b92879142fcc37c1f054717eff8a886eb","first_computed_at":"2026-05-18T03:24:42.850655Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:42.850655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FmCponRGGHPpdCIBMfzhyFlyec9rfBISKiqUHtUkigH20dNU4XmVF2kNPFJ4GPYSACFGPrrqNbbmurqVjID6CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:42.851364Z","signed_message":"canonical_sha256_bytes"},"source_id":"0807.2977","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8be1c968745baf5673c1e6410b1ff9ea411aa7e17d8e29403315b9a0b2421066","sha256:0dc0e21b3c07f36406a60feb319883a4660a8429bfb66ac3ec0fa1bc99a7892d"],"state_sha256":"2c56e855b92c5781e1ee9f0a677a98c9602468310d2399bd42eb18d31d6f7ea9"}