{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:22Y65ZZE4GPOVYSJDFY4ONMSN5","short_pith_number":"pith:22Y65ZZE","canonical_record":{"source":{"id":"quant-ph/0312207","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2003-12-28T18:11:56Z","cross_cats_sorted":[],"title_canon_sha256":"ad242bdd37ca82c9dbd7cdad31c14be7363ae9e09f77fd5ee30f645e784ea41b","abstract_canon_sha256":"0af8ef9afd7b413ea631229ebbdc80b7162fedb5a29c1723a5265a15d590dda4"},"schema_version":"1.0"},"canonical_sha256":"d6b1eee724e19eeae2491971c735926f4c67ed869f1269775c0d919d9e2cbe5b","source":{"kind":"arxiv","id":"quant-ph/0312207","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0312207","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0312207v2","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0312207","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"22Y65ZZE4GPO","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"22Y65ZZE4GPOVYSJ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"22Y65ZZE","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:22Y65ZZE4GPOVYSJDFY4ONMSN5","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0312207","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2003-12-28T18:11:56Z","cross_cats_sorted":[],"title_canon_sha256":"ad242bdd37ca82c9dbd7cdad31c14be7363ae9e09f77fd5ee30f645e784ea41b","abstract_canon_sha256":"0af8ef9afd7b413ea631229ebbdc80b7162fedb5a29c1723a5265a15d590dda4"},"schema_version":"1.0"},"canonical_sha256":"d6b1eee724e19eeae2491971c735926f4c67ed869f1269775c0d919d9e2cbe5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:24:20.122910Z","signature_b64":"GGbwvPOvjPlbzJYPqjpKhZY6BEEGxmtjjj90HvZrSnCQgBVCvCrvyzI2pMw5hNfAtYp9VbU1bhq09mwcVZK7Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6b1eee724e19eeae2491971c735926f4c67ed869f1269775c0d919d9e2cbe5b","last_reissued_at":"2026-05-18T03:24:20.122123Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:24:20.122123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0312207","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":"2026-05-18T03:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMXhatXbabLdowU+IxkEGUyctp8fvv3C2rWnPW2Ffs7iEsA51Fz4coE++iek/Q4SZS5QKdkrHVhTNIhpSUhxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:36:57.600659Z"},"content_sha256":"29feffc59ab1fa40a5c11297ca2769c3b53bfa4f876a5bee78ab38f30933f12a","schema_version":"1.0","event_id":"sha256:29feffc59ab1fa40a5c11297ca2769c3b53bfa4f876a5bee78ab38f30933f12a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:22Y65ZZE4GPOVYSJDFY4ONMSN5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gaussian Decoherence from Random Spin Environments","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"F.M. Cucchietti, J.P. Paz, W.H. Zurek","submitted_at":"2003-12-28T18:11:56Z","abstract_excerpt":"We examine an exactly solvable model of decoherence - a spin-system interacting with a collection of environment spins. We show that in this model (introduced some time ago to illustrate environment-induced superselection) generic assumptions about the coupling strengths lead to a universal (Gaussian) suppression of coherence between pointer states. We explore the regimes of validity of these results and discuss their relation to the spectral features of the environment and to the Loschmidt echo (or fidelity). Finally, we comment on the observation of such time dependence in spin echo experime"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0312207","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":"2026-05-18T03:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ovEUEDHbn4/U9ILTJZbErUoA1fppWXYOvUFxtksBmn2zoveAXX+htqf7p7SLrl1ozB4v+1PR16soVe5Unge+AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:36:57.601268Z"},"content_sha256":"9c819e54820e22e07c7216790a5f0fb2d8870b0c9d3eb9e0f29dc58b4be280a4","schema_version":"1.0","event_id":"sha256:9c819e54820e22e07c7216790a5f0fb2d8870b0c9d3eb9e0f29dc58b4be280a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/bundle.json","state_url":"https://pith.science/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/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":"2026-05-29T20:36:57Z","links":{"resolver":"https://pith.science/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5","bundle":"https://pith.science/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/bundle.json","state":"https://pith.science/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/22Y65ZZE4GPOVYSJDFY4ONMSN5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:22Y65ZZE4GPOVYSJDFY4ONMSN5","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":"0af8ef9afd7b413ea631229ebbdc80b7162fedb5a29c1723a5265a15d590dda4","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-12-28T18:11:56Z","title_canon_sha256":"ad242bdd37ca82c9dbd7cdad31c14be7363ae9e09f77fd5ee30f645e784ea41b"},"schema_version":"1.0","source":{"id":"quant-ph/0312207","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0312207","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0312207v2","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0312207","created_at":"2026-05-18T03:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"22Y65ZZE4GPO","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"22Y65ZZE4GPOVYSJ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"22Y65ZZE","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:9c819e54820e22e07c7216790a5f0fb2d8870b0c9d3eb9e0f29dc58b4be280a4","target":"graph","created_at":"2026-05-18T03:24:20Z","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 examine an exactly solvable model of decoherence - a spin-system interacting with a collection of environment spins. We show that in this model (introduced some time ago to illustrate environment-induced superselection) generic assumptions about the coupling strengths lead to a universal (Gaussian) suppression of coherence between pointer states. We explore the regimes of validity of these results and discuss their relation to the spectral features of the environment and to the Loschmidt echo (or fidelity). Finally, we comment on the observation of such time dependence in spin echo experime","authors_text":"F.M. Cucchietti, J.P. Paz, W.H. Zurek","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2003-12-28T18:11:56Z","title":"Gaussian Decoherence from Random Spin Environments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0312207","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":"sha256:29feffc59ab1fa40a5c11297ca2769c3b53bfa4f876a5bee78ab38f30933f12a","target":"record","created_at":"2026-05-18T03:24:20Z","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":"0af8ef9afd7b413ea631229ebbdc80b7162fedb5a29c1723a5265a15d590dda4","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-12-28T18:11:56Z","title_canon_sha256":"ad242bdd37ca82c9dbd7cdad31c14be7363ae9e09f77fd5ee30f645e784ea41b"},"schema_version":"1.0","source":{"id":"quant-ph/0312207","kind":"arxiv","version":2}},"canonical_sha256":"d6b1eee724e19eeae2491971c735926f4c67ed869f1269775c0d919d9e2cbe5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6b1eee724e19eeae2491971c735926f4c67ed869f1269775c0d919d9e2cbe5b","first_computed_at":"2026-05-18T03:24:20.122123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:20.122123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GGbwvPOvjPlbzJYPqjpKhZY6BEEGxmtjjj90HvZrSnCQgBVCvCrvyzI2pMw5hNfAtYp9VbU1bhq09mwcVZK7Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:20.122910Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0312207","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29feffc59ab1fa40a5c11297ca2769c3b53bfa4f876a5bee78ab38f30933f12a","sha256:9c819e54820e22e07c7216790a5f0fb2d8870b0c9d3eb9e0f29dc58b4be280a4"],"state_sha256":"ac4f5ca7762b5519c4e8261562b730374148dd296b70b11f9f1fb414c832d0db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WZPuuPblJoW76qPMrUKDINGjfuEMrdr0Ca4KjKBO23UsIvY/aNAPxJ9yTTjKTIV9Pwp7NRACcg9e9yONOittBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T20:36:57.604340Z","bundle_sha256":"a4ce0f09f661de7fab15dfd7c1eed8a5f144aae9fe09be1da152c6e63557d173"}}