{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:UR2CFZGUMOW563OTNKKSOBNXGC","short_pith_number":"pith:UR2CFZGU","canonical_record":{"source":{"id":"1807.03444","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-10T01:42:21Z","cross_cats_sorted":[],"title_canon_sha256":"bb22a7698f745e24f8c2b0a6bac91aa95567e1138add601989eda865ec086d48","abstract_canon_sha256":"00218f1bf4efad2e71b864f36283cc66819456b3430b3d5215bc4a61aedfb74a"},"schema_version":"1.0"},"canonical_sha256":"a47422e4d463addf6dd36a952705b730b4b1c6615ad62c2a99a06e2ecfd81b01","source":{"kind":"arxiv","id":"1807.03444","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03444","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03444v1","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03444","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"pith_short_12","alias_value":"UR2CFZGUMOW5","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UR2CFZGUMOW563OT","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UR2CFZGU","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:UR2CFZGUMOW563OTNKKSOBNXGC","target":"record","payload":{"canonical_record":{"source":{"id":"1807.03444","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-10T01:42:21Z","cross_cats_sorted":[],"title_canon_sha256":"bb22a7698f745e24f8c2b0a6bac91aa95567e1138add601989eda865ec086d48","abstract_canon_sha256":"00218f1bf4efad2e71b864f36283cc66819456b3430b3d5215bc4a61aedfb74a"},"schema_version":"1.0"},"canonical_sha256":"a47422e4d463addf6dd36a952705b730b4b1c6615ad62c2a99a06e2ecfd81b01","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:52.310434Z","signature_b64":"22S5oLIArgaIkdM1RnfoYnngr/limUdK8awsZIUaDk9Tln4uvGgdpDwetcAHZuU0zelKal8Qr+nBUiA6NqtQDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a47422e4d463addf6dd36a952705b730b4b1c6615ad62c2a99a06e2ecfd81b01","last_reissued_at":"2026-05-17T23:59:52.309823Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:52.309823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.03444","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":"2026-05-17T23:59:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OBhhToZ3eeKRWH9vGyWUnI2kPQzE4JoDho3Hzw5Wq+9Fb8MRpmoTKSd/ApXxxstCPCkR4fCkilS/hSAgcBpJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:37:20.709058Z"},"content_sha256":"8420b92e3e100f5b011f8fe57fd9bb485b8d4e489e21f0814552bc245e671474","schema_version":"1.0","event_id":"sha256:8420b92e3e100f5b011f8fe57fd9bb485b8d4e489e21f0814552bc245e671474"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:UR2CFZGUMOW563OTNKKSOBNXGC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analytical solutions for a boundary driven XY chain","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chu Guo, Dario Poletti","submitted_at":"2018-07-10T01:42:21Z","abstract_excerpt":"We study non-interacting fermionic systems dissipatively driven at their boundaries, focusing in particular on the case of a non-number-conserving Hamiltonian, which for example describes an $XY$ spin chain. We show that despite the lack of number conservation, it is possible to convert the problem of calculating the normal modes of the master equations and their corresponding rapidities, into diagonalizing simply an $L\\times L$ tridiagonal bordered $2-$Toeplitz matrix, where $L$ is the size of the system. Such structure of matrix allows us to further reduce the problem into solving a scalar t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03444","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":"2026-05-17T23:59:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r5KoSPG5+5586BlmxpGoh6zt5iqtGInvqeymJ82+TFVuEkMoVre+zS4B0+MkK02fw1K3paABBxcXgBeC8edLAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:37:20.709423Z"},"content_sha256":"df00523ede6bf6213f8fca367e772947026f01ec7185f98e136597a9612fd811","schema_version":"1.0","event_id":"sha256:df00523ede6bf6213f8fca367e772947026f01ec7185f98e136597a9612fd811"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UR2CFZGUMOW563OTNKKSOBNXGC/bundle.json","state_url":"https://pith.science/pith/UR2CFZGUMOW563OTNKKSOBNXGC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UR2CFZGUMOW563OTNKKSOBNXGC/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":"2026-05-31T03:37:20Z","links":{"resolver":"https://pith.science/pith/UR2CFZGUMOW563OTNKKSOBNXGC","bundle":"https://pith.science/pith/UR2CFZGUMOW563OTNKKSOBNXGC/bundle.json","state":"https://pith.science/pith/UR2CFZGUMOW563OTNKKSOBNXGC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UR2CFZGUMOW563OTNKKSOBNXGC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:UR2CFZGUMOW563OTNKKSOBNXGC","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":"00218f1bf4efad2e71b864f36283cc66819456b3430b3d5215bc4a61aedfb74a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-10T01:42:21Z","title_canon_sha256":"bb22a7698f745e24f8c2b0a6bac91aa95567e1138add601989eda865ec086d48"},"schema_version":"1.0","source":{"id":"1807.03444","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03444","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03444v1","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03444","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"pith_short_12","alias_value":"UR2CFZGUMOW5","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UR2CFZGUMOW563OT","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UR2CFZGU","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:df00523ede6bf6213f8fca367e772947026f01ec7185f98e136597a9612fd811","target":"graph","created_at":"2026-05-17T23:59:52Z","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 study non-interacting fermionic systems dissipatively driven at their boundaries, focusing in particular on the case of a non-number-conserving Hamiltonian, which for example describes an $XY$ spin chain. We show that despite the lack of number conservation, it is possible to convert the problem of calculating the normal modes of the master equations and their corresponding rapidities, into diagonalizing simply an $L\\times L$ tridiagonal bordered $2-$Toeplitz matrix, where $L$ is the size of the system. Such structure of matrix allows us to further reduce the problem into solving a scalar t","authors_text":"Chu Guo, Dario Poletti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-10T01:42:21Z","title":"Analytical solutions for a boundary driven XY chain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03444","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":"sha256:8420b92e3e100f5b011f8fe57fd9bb485b8d4e489e21f0814552bc245e671474","target":"record","created_at":"2026-05-17T23:59:52Z","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":"00218f1bf4efad2e71b864f36283cc66819456b3430b3d5215bc4a61aedfb74a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-07-10T01:42:21Z","title_canon_sha256":"bb22a7698f745e24f8c2b0a6bac91aa95567e1138add601989eda865ec086d48"},"schema_version":"1.0","source":{"id":"1807.03444","kind":"arxiv","version":1}},"canonical_sha256":"a47422e4d463addf6dd36a952705b730b4b1c6615ad62c2a99a06e2ecfd81b01","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a47422e4d463addf6dd36a952705b730b4b1c6615ad62c2a99a06e2ecfd81b01","first_computed_at":"2026-05-17T23:59:52.309823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:52.309823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"22S5oLIArgaIkdM1RnfoYnngr/limUdK8awsZIUaDk9Tln4uvGgdpDwetcAHZuU0zelKal8Qr+nBUiA6NqtQDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:52.310434Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03444","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8420b92e3e100f5b011f8fe57fd9bb485b8d4e489e21f0814552bc245e671474","sha256:df00523ede6bf6213f8fca367e772947026f01ec7185f98e136597a9612fd811"],"state_sha256":"1d4238305f4d73a2c969f888d1d274e4e64ea62db0a33e117d48002827ed72eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qYkUWFtXGd9+rOP5JTZWmp0kYDYuLl9NnDLpC0lym3gtsZCDV0Dz562THShcvhCRu0eR7fqWj5p/nW2Hs4NDDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:37:20.711619Z","bundle_sha256":"8dd1f597c09f3d15cdfefa4030c4b5d0dfadc98db7406f3d4cb81072287b9a75"}}