{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ESY4TZ6ULXNHRAO62V4BR7K2JT","short_pith_number":"pith:ESY4TZ6U","canonical_record":{"source":{"id":"2307.10791","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-07-20T11:45:32Z","cross_cats_sorted":[],"title_canon_sha256":"9cde6683106ff7f093aa6c45e1f618c11a6d482ec2e185d55f2c64062565ca49","abstract_canon_sha256":"c444af3fd8e110ef57d89176b18c1ba27dce3d11df85d4e6faab1750c476ba00"},"schema_version":"1.0"},"canonical_sha256":"24b1c9e7d45dda7881ded57818fd5a4cc9d619595d249e5fb2c7e211b04216b8","source":{"kind":"arxiv","id":"2307.10791","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.10791","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"2307.10791v2","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.10791","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"ESY4TZ6ULXNH","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_16","alias_value":"ESY4TZ6ULXNHRAO6","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_8","alias_value":"ESY4TZ6U","created_at":"2026-07-05T08:05:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ESY4TZ6ULXNHRAO62V4BR7K2JT","target":"record","payload":{"canonical_record":{"source":{"id":"2307.10791","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-07-20T11:45:32Z","cross_cats_sorted":[],"title_canon_sha256":"9cde6683106ff7f093aa6c45e1f618c11a6d482ec2e185d55f2c64062565ca49","abstract_canon_sha256":"c444af3fd8e110ef57d89176b18c1ba27dce3d11df85d4e6faab1750c476ba00"},"schema_version":"1.0"},"canonical_sha256":"24b1c9e7d45dda7881ded57818fd5a4cc9d619595d249e5fb2c7e211b04216b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:05:37.785181Z","signature_b64":"AV5W/WFwCHbXbL/qo8oi7Ln3vc0OYPOkVxUq8YdpifhDJ+KHTyOgRFgEcfBGWnlxzcp/4qUHISczNhxIPIZQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24b1c9e7d45dda7881ded57818fd5a4cc9d619595d249e5fb2c7e211b04216b8","last_reissued_at":"2026-07-05T08:05:37.784720Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:05:37.784720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2307.10791","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":"2026-07-05T08:05:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GbTxoPXq6/TMZS3hvyPWLqmbDGY4rd2sNk41GrnaoDMermKXOuN2N39byLCF0njn1Zy9+C9aHM7ZcWmMaIl6Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T13:26:46.552622Z"},"content_sha256":"180ebfdf8d3c52c2ffb87f4d007e0dd9195f04d6b309f0a83212efb517117118","schema_version":"1.0","event_id":"sha256:180ebfdf8d3c52c2ffb87f4d007e0dd9195f04d6b309f0a83212efb517117118"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ESY4TZ6ULXNHRAO62V4BR7K2JT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-frequency quantum field theory applied to the single-impurity Anderson model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Anxiang Ge, Elias Walter, Fabian B. Kugler, Jan von Delft, Nepomuk Ritz, Santiago Aguirre","submitted_at":"2023-07-20T11:45:32Z","abstract_excerpt":"A major challenge in the field of correlated electrons is the computation of dynamical correlation functions. For comparisons with experiment, one is interested in their real-frequency dependence. This is difficult to compute, as imaginary-frequency data from the Matsubara formalism require analytic continuation, a numerically ill-posed problem. Here, we apply quantum field theory to the single-impurity Anderson model (AM), using the Keldysh instead of the Matsubara formalism with direct access to the self-energy and dynamical susceptibilities on the real-frequency axis. We present results fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.10791","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2307.10791/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:05:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SYztl73YrRjkdBlQLnO3K0aAyqDo0O4pvO3I5bEaMjfxJsywfPZ3R0km/YVWln+Xmacz8V9hOBI12B8esABwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T13:26:46.553025Z"},"content_sha256":"7b2da50c2fe3e91b6f6348a518ecc51974e3603283ffcf68275f423c774c97ba","schema_version":"1.0","event_id":"sha256:7b2da50c2fe3e91b6f6348a518ecc51974e3603283ffcf68275f423c774c97ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/bundle.json","state_url":"https://pith.science/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/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":"2026-08-17T13:26:46Z","links":{"resolver":"https://pith.science/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT","bundle":"https://pith.science/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/bundle.json","state":"https://pith.science/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ESY4TZ6ULXNHRAO62V4BR7K2JT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ESY4TZ6ULXNHRAO62V4BR7K2JT","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":"c444af3fd8e110ef57d89176b18c1ba27dce3d11df85d4e6faab1750c476ba00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-07-20T11:45:32Z","title_canon_sha256":"9cde6683106ff7f093aa6c45e1f618c11a6d482ec2e185d55f2c64062565ca49"},"schema_version":"1.0","source":{"id":"2307.10791","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.10791","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"2307.10791v2","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.10791","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"ESY4TZ6ULXNH","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_16","alias_value":"ESY4TZ6ULXNHRAO6","created_at":"2026-07-05T08:05:37Z"},{"alias_kind":"pith_short_8","alias_value":"ESY4TZ6U","created_at":"2026-07-05T08:05:37Z"}],"graph_snapshots":[{"event_id":"sha256:7b2da50c2fe3e91b6f6348a518ecc51974e3603283ffcf68275f423c774c97ba","target":"graph","created_at":"2026-07-05T08:05:37Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2307.10791/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A major challenge in the field of correlated electrons is the computation of dynamical correlation functions. For comparisons with experiment, one is interested in their real-frequency dependence. This is difficult to compute, as imaginary-frequency data from the Matsubara formalism require analytic continuation, a numerically ill-posed problem. Here, we apply quantum field theory to the single-impurity Anderson model (AM), using the Keldysh instead of the Matsubara formalism with direct access to the self-energy and dynamical susceptibilities on the real-frequency axis. We present results fro","authors_text":"Anxiang Ge, Elias Walter, Fabian B. Kugler, Jan von Delft, Nepomuk Ritz, Santiago Aguirre","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-07-20T11:45:32Z","title":"Real-frequency quantum field theory applied to the single-impurity Anderson model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.10791","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":"sha256:180ebfdf8d3c52c2ffb87f4d007e0dd9195f04d6b309f0a83212efb517117118","target":"record","created_at":"2026-07-05T08:05:37Z","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":"c444af3fd8e110ef57d89176b18c1ba27dce3d11df85d4e6faab1750c476ba00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-07-20T11:45:32Z","title_canon_sha256":"9cde6683106ff7f093aa6c45e1f618c11a6d482ec2e185d55f2c64062565ca49"},"schema_version":"1.0","source":{"id":"2307.10791","kind":"arxiv","version":2}},"canonical_sha256":"24b1c9e7d45dda7881ded57818fd5a4cc9d619595d249e5fb2c7e211b04216b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24b1c9e7d45dda7881ded57818fd5a4cc9d619595d249e5fb2c7e211b04216b8","first_computed_at":"2026-07-05T08:05:37.784720Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:05:37.784720Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AV5W/WFwCHbXbL/qo8oi7Ln3vc0OYPOkVxUq8YdpifhDJ+KHTyOgRFgEcfBGWnlxzcp/4qUHISczNhxIPIZQCA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:05:37.785181Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.10791","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:180ebfdf8d3c52c2ffb87f4d007e0dd9195f04d6b309f0a83212efb517117118","sha256:7b2da50c2fe3e91b6f6348a518ecc51974e3603283ffcf68275f423c774c97ba"],"state_sha256":"6c0c013c47780a686bacf0304d8d79cac229fcd0d53a4bdedcc9745947227a6a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KnwR25OvvnnxyxXZMAF0/c0x+5nxKhztPrvrPzIntWesDGg06QUtLKJxoKjYtcK4BEGohIxOjutvRRITwOwGDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T13:26:46.556011Z","bundle_sha256":"485604513a26073d0a90793cc9b9936e73eca1b8570b4d6179f7db35d921ef15"}}