{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:UYPEWTKGQQZMMLEPE447BX6B7Y","short_pith_number":"pith:UYPEWTKG","canonical_record":{"source":{"id":"cond-mat/9909409","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-09-29T04:09:42Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"f8dd68ee3694a0ea784965a8feec879ef7aea00a1ca61ca4ff31fd141f00ba30","abstract_canon_sha256":"feb463f79cf3c67c89d38f2b8a3600fdef949a58e4d533f99534a1cb5ab001c1"},"schema_version":"1.0"},"canonical_sha256":"a61e4b4d468432c62c8f2739f0dfc1fe11d65eb63da5547960d5e36f63e42439","source":{"kind":"arxiv","id":"cond-mat/9909409","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9909409","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9909409v1","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9909409","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"pith_short_12","alias_value":"UYPEWTKGQQZM","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"UYPEWTKGQQZMMLEP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"UYPEWTKG","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:UYPEWTKGQQZMMLEPE447BX6B7Y","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9909409","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-09-29T04:09:42Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"f8dd68ee3694a0ea784965a8feec879ef7aea00a1ca61ca4ff31fd141f00ba30","abstract_canon_sha256":"feb463f79cf3c67c89d38f2b8a3600fdef949a58e4d533f99534a1cb5ab001c1"},"schema_version":"1.0"},"canonical_sha256":"a61e4b4d468432c62c8f2739f0dfc1fe11d65eb63da5547960d5e36f63e42439","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:04.228043Z","signature_b64":"+7bNaV9Ke4VXRe1iemJDAWQ43ChiIg8KP+gTqxf3H0uUNHDpS85iYHUl5j3d5Yw7a0zl+WBD8FVX0v7yVB6EAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a61e4b4d468432c62c8f2739f0dfc1fe11d65eb63da5547960d5e36f63e42439","last_reissued_at":"2026-05-18T01:07:04.227397Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:04.227397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9909409","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":"2026-05-18T01:07:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWnekQ/dsNAw5oDHmK8Pl8KwZ7XNxICy+7gSkGfOnK8yN9YdtBx1Q3k4FEKxvAtp0TiMxrrgUaWAEZ+00gVBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T10:32:00.357293Z"},"content_sha256":"3357741a0e6cc066fe106de6296c62cd9007f2f9c8740c8f660e256ea0a938ac","schema_version":"1.0","event_id":"sha256:3357741a0e6cc066fe106de6296c62cd9007f2f9c8740c8f660e256ea0a938ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:UYPEWTKGQQZMMLEPE447BX6B7Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase Separation Based on U(1) Slave-boson Functional Integral Approach to the t-J Model","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Korea), Sung-Ho Suck Salk (Pohang University of Science, Tae-Hyoung Gimm, Technology","submitted_at":"1999-09-29T04:09:42Z","abstract_excerpt":"We investigate the phase diagram of phase separation for the hole-doped two dimensional system of antiferromagnetically correlated electrons based on the U(1) slave-boson functional integral approach to the t-J model. We show that the phase separation occurs for all values of J/t, that is, whether $0 < J/t < 1$ or $J/t \\geq 1$ with J, the Heisenberg coupling constant and t, the hopping strength. This is consistent with other numerical studies of hole-doped two dimensional antiferromagnets. The phase separation in the physically interesting J region, $0 < J/t \\lesssim 0.4$ is examined by introd"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9909409","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":"2026-05-18T01:07:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NyIWn5ADVv/GTofjc7nNYz8lNXcEPFMvoYP5M6OEwK7w67FAnucvWgK4/n33/CuSL8OFgvOph/tblJQ5dNYhCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T10:32:00.357667Z"},"content_sha256":"e4db5f4bb8740a42faf4e5b1d6896b10f8a1a3d72f69c8b20bda8ba9c6efa478","schema_version":"1.0","event_id":"sha256:e4db5f4bb8740a42faf4e5b1d6896b10f8a1a3d72f69c8b20bda8ba9c6efa478"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/bundle.json","state_url":"https://pith.science/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/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":"2026-06-25T10:32:00Z","links":{"resolver":"https://pith.science/pith/UYPEWTKGQQZMMLEPE447BX6B7Y","bundle":"https://pith.science/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/bundle.json","state":"https://pith.science/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UYPEWTKGQQZMMLEPE447BX6B7Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:UYPEWTKGQQZMMLEPE447BX6B7Y","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":"feb463f79cf3c67c89d38f2b8a3600fdef949a58e4d533f99534a1cb5ab001c1","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-09-29T04:09:42Z","title_canon_sha256":"f8dd68ee3694a0ea784965a8feec879ef7aea00a1ca61ca4ff31fd141f00ba30"},"schema_version":"1.0","source":{"id":"cond-mat/9909409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9909409","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9909409v1","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9909409","created_at":"2026-05-18T01:07:04Z"},{"alias_kind":"pith_short_12","alias_value":"UYPEWTKGQQZM","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"UYPEWTKGQQZMMLEP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"UYPEWTKG","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:e4db5f4bb8740a42faf4e5b1d6896b10f8a1a3d72f69c8b20bda8ba9c6efa478","target":"graph","created_at":"2026-05-18T01:07:04Z","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":"We investigate the phase diagram of phase separation for the hole-doped two dimensional system of antiferromagnetically correlated electrons based on the U(1) slave-boson functional integral approach to the t-J model. We show that the phase separation occurs for all values of J/t, that is, whether $0 < J/t < 1$ or $J/t \\geq 1$ with J, the Heisenberg coupling constant and t, the hopping strength. This is consistent with other numerical studies of hole-doped two dimensional antiferromagnets. The phase separation in the physically interesting J region, $0 < J/t \\lesssim 0.4$ is examined by introd","authors_text":"Korea), Sung-Ho Suck Salk (Pohang University of Science, Tae-Hyoung Gimm, Technology","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-09-29T04:09:42Z","title":"Phase Separation Based on U(1) Slave-boson Functional Integral Approach to the t-J Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9909409","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":"sha256:3357741a0e6cc066fe106de6296c62cd9007f2f9c8740c8f660e256ea0a938ac","target":"record","created_at":"2026-05-18T01:07:04Z","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":"feb463f79cf3c67c89d38f2b8a3600fdef949a58e4d533f99534a1cb5ab001c1","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-09-29T04:09:42Z","title_canon_sha256":"f8dd68ee3694a0ea784965a8feec879ef7aea00a1ca61ca4ff31fd141f00ba30"},"schema_version":"1.0","source":{"id":"cond-mat/9909409","kind":"arxiv","version":1}},"canonical_sha256":"a61e4b4d468432c62c8f2739f0dfc1fe11d65eb63da5547960d5e36f63e42439","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a61e4b4d468432c62c8f2739f0dfc1fe11d65eb63da5547960d5e36f63e42439","first_computed_at":"2026-05-18T01:07:04.227397Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:04.227397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+7bNaV9Ke4VXRe1iemJDAWQ43ChiIg8KP+gTqxf3H0uUNHDpS85iYHUl5j3d5Yw7a0zl+WBD8FVX0v7yVB6EAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:04.228043Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9909409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3357741a0e6cc066fe106de6296c62cd9007f2f9c8740c8f660e256ea0a938ac","sha256:e4db5f4bb8740a42faf4e5b1d6896b10f8a1a3d72f69c8b20bda8ba9c6efa478"],"state_sha256":"ea9e7f67dc9c59e5ad4a6b92138f9a6a131a5b58066b6aedc0115a3684bef5de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZfalE2vHFY20lamZDbkzpWEy+AwwxoilLpyBMcnnkmBX95+TiLBTQPQ1jOv+/ty/MmLO1/9/D/slN7ydEe15BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T10:32:00.359664Z","bundle_sha256":"1c0a2b4c8719f49c90cb0d81bed0c2d9459371832319ac7004acecdb927b52e7"}}