{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:KHVCZXIAMRZNECKI5YBOXLUTSJ","short_pith_number":"pith:KHVCZXIA","canonical_record":{"source":{"id":"1803.03543","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-03-08T18:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"f0c1ec2f3843b9459c8b1d9bb1bb1b32618f93f88cb8a80065d729a6bcec9210","abstract_canon_sha256":"0fe79bb7ef37c7791723b758fb26e17bda087bb8987b873b04f729010d382508"},"schema_version":"1.0"},"canonical_sha256":"51ea2cdd006472d20948ee02ebae939276ecf96bd84f573874067fb782e87dff","source":{"kind":"arxiv","id":"1803.03543","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03543","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03543v1","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03543","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"pith_short_12","alias_value":"KHVCZXIAMRZN","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KHVCZXIAMRZNECKI","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KHVCZXIA","created_at":"2026-05-18T12:32:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:KHVCZXIAMRZNECKI5YBOXLUTSJ","target":"record","payload":{"canonical_record":{"source":{"id":"1803.03543","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-03-08T18:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"f0c1ec2f3843b9459c8b1d9bb1bb1b32618f93f88cb8a80065d729a6bcec9210","abstract_canon_sha256":"0fe79bb7ef37c7791723b758fb26e17bda087bb8987b873b04f729010d382508"},"schema_version":"1.0"},"canonical_sha256":"51ea2cdd006472d20948ee02ebae939276ecf96bd84f573874067fb782e87dff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:17.018727Z","signature_b64":"Xtq8R+YRQdYQX7MjgrlaKPlL+2AogI5zKOqFFW3sf0jPLe67tXGI0j1chjl/pA+hbEygDuxAr8IW4unG3vPfBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"51ea2cdd006472d20948ee02ebae939276ecf96bd84f573874067fb782e87dff","last_reissued_at":"2026-05-18T00:03:17.018163Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:17.018163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.03543","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":"2026-05-18T00:03:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1tCgEcsz538j9M79dhg1FnjDkM/hb5S0I0vM0bLhW56an1yHDwd173nsreIG4TqT24Ql61zbB540zE4ZOl+gCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:58:08.449706Z"},"content_sha256":"3b0de20b90f241723e9402f6b864d710937936cef76a4d07acf8f834d3ac8486","schema_version":"1.0","event_id":"sha256:3b0de20b90f241723e9402f6b864d710937936cef76a4d07acf8f834d3ac8486"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:KHVCZXIAMRZNECKI5YBOXLUTSJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-ergodic states induced by impurity levels in quantum spin chains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"A. O. Garc\\'ia Rodr\\'iguez, G. G. Cabrera","submitted_at":"2018-03-08T18:18:56Z","abstract_excerpt":"The semi-infinite XY spin chain with an impurity at the boundary has been chosen as a prototype of interacting many-body systems to test for non-ergodic behavior. The model is exactly solvable in analytic way in the thermodynamic limit, where energy eigenstates and the spectrum are obtained in closed form. In addition of a continuous band, localized states may split off from the continuum, for some values of the impurity parameters. In the next step, after the preparation of an arbitrary non-equilibrium state, we observe the time evolution of the site magnetization. Relaxation properties are d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03543","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":"2026-05-18T00:03:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IGGe+yBtONYecFcNMgDQvDSJLNZQibgCGKEhweJxMxQe5kI6ZJKI0flav+1l/C+JeOaHjnH2KYXefsXYRl9JCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:58:08.450056Z"},"content_sha256":"edbcc6253c85a2ccb0fd87d68e379b99d3826aada8bf10792af39f90fcbcafa7","schema_version":"1.0","event_id":"sha256:edbcc6253c85a2ccb0fd87d68e379b99d3826aada8bf10792af39f90fcbcafa7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/bundle.json","state_url":"https://pith.science/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/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":"2026-06-05T14:58:08Z","links":{"resolver":"https://pith.science/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ","bundle":"https://pith.science/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/bundle.json","state":"https://pith.science/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KHVCZXIAMRZNECKI5YBOXLUTSJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KHVCZXIAMRZNECKI5YBOXLUTSJ","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":"0fe79bb7ef37c7791723b758fb26e17bda087bb8987b873b04f729010d382508","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-03-08T18:18:56Z","title_canon_sha256":"f0c1ec2f3843b9459c8b1d9bb1bb1b32618f93f88cb8a80065d729a6bcec9210"},"schema_version":"1.0","source":{"id":"1803.03543","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03543","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03543v1","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03543","created_at":"2026-05-18T00:03:17Z"},{"alias_kind":"pith_short_12","alias_value":"KHVCZXIAMRZN","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KHVCZXIAMRZNECKI","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KHVCZXIA","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:edbcc6253c85a2ccb0fd87d68e379b99d3826aada8bf10792af39f90fcbcafa7","target":"graph","created_at":"2026-05-18T00:03:17Z","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 semi-infinite XY spin chain with an impurity at the boundary has been chosen as a prototype of interacting many-body systems to test for non-ergodic behavior. The model is exactly solvable in analytic way in the thermodynamic limit, where energy eigenstates and the spectrum are obtained in closed form. In addition of a continuous band, localized states may split off from the continuum, for some values of the impurity parameters. In the next step, after the preparation of an arbitrary non-equilibrium state, we observe the time evolution of the site magnetization. Relaxation properties are d","authors_text":"A. O. Garc\\'ia Rodr\\'iguez, G. G. Cabrera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-03-08T18:18:56Z","title":"Non-ergodic states induced by impurity levels in quantum spin chains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03543","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":"sha256:3b0de20b90f241723e9402f6b864d710937936cef76a4d07acf8f834d3ac8486","target":"record","created_at":"2026-05-18T00:03:17Z","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":"0fe79bb7ef37c7791723b758fb26e17bda087bb8987b873b04f729010d382508","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-03-08T18:18:56Z","title_canon_sha256":"f0c1ec2f3843b9459c8b1d9bb1bb1b32618f93f88cb8a80065d729a6bcec9210"},"schema_version":"1.0","source":{"id":"1803.03543","kind":"arxiv","version":1}},"canonical_sha256":"51ea2cdd006472d20948ee02ebae939276ecf96bd84f573874067fb782e87dff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51ea2cdd006472d20948ee02ebae939276ecf96bd84f573874067fb782e87dff","first_computed_at":"2026-05-18T00:03:17.018163Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:17.018163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xtq8R+YRQdYQX7MjgrlaKPlL+2AogI5zKOqFFW3sf0jPLe67tXGI0j1chjl/pA+hbEygDuxAr8IW4unG3vPfBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:17.018727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.03543","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b0de20b90f241723e9402f6b864d710937936cef76a4d07acf8f834d3ac8486","sha256:edbcc6253c85a2ccb0fd87d68e379b99d3826aada8bf10792af39f90fcbcafa7"],"state_sha256":"6dedb3dc7ec19531e8b8de12c8c315c04ceecffa17e1d6e25774abbc69518416"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2HfhfE4k8/QbGg/z9NOljNT85MEWoh0eKgeFUoUFf7jqS9Ui1eLctoG3bId5/jbe6NvCOWDMkB99zscQvpETDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T14:58:08.452239Z","bundle_sha256":"7aea4c9333a49d49ac25f56cb39b493112b189461685c276120566ec9cfc8568"}}