{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:KBVUTJ7G7OQ2EM36VDJIZ2FOQN","short_pith_number":"pith:KBVUTJ7G","schema_version":"1.0","canonical_sha256":"506b49a7e6fba1a2337ea8d28ce8ae8373c6debbc8d03b917a51c62402047d04","source":{"kind":"arxiv","id":"2608.12317","version":1},"attestation_state":"computed","paper":{"title":"Probing Impurity Quantum Criticality with Entanglement Witnesses","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Andrew J. Millis, Mateo C\\'ardenes Wuttig","submitted_at":"2026-08-12T17:59:06Z","abstract_excerpt":"Entanglement is a defining feature of quantum mechanics, and its relation to quantum criticality is of considerable current interest. Here we show that measurable spin and charge fluctuations provide an entanglement witness of quantum criticality in the two-impurity Kondo model, which has experimental realizations in terms of coupled quantum dots and magnetic impurities added to surfaces. We use density-matrix renormalization group and numerical renormalization group calculations to resolve the non-Fermi-liquid critical point separating two independently Kondo-screened impurities from an inter"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2608.12317","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2026-08-12T17:59:06Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"432be7521db959e13a5855e160fa33bb640d049725f92825b64d38c5df2ab47d","abstract_canon_sha256":"465c23f236d41d1b1c77c1f16fdbce34ff1d98f9db377718ce75d29b387bb897"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-13T01:30:48.074782Z","signature_b64":"EhpQFaLdrmsYZkp36uy72cGzYBnfeFD+bGnm7GzVRyXlx6YTU+cqxsOG3CgWyAAAn4jRDJ0jbnz8523f0x+/BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"506b49a7e6fba1a2337ea8d28ce8ae8373c6debbc8d03b917a51c62402047d04","last_reissued_at":"2026-08-13T01:30:48.072545Z","signature_status":"signed_v1","first_computed_at":"2026-08-13T01:30:48.072545Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Probing Impurity Quantum Criticality with Entanglement Witnesses","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Andrew J. Millis, Mateo C\\'ardenes Wuttig","submitted_at":"2026-08-12T17:59:06Z","abstract_excerpt":"Entanglement is a defining feature of quantum mechanics, and its relation to quantum criticality is of considerable current interest. Here we show that measurable spin and charge fluctuations provide an entanglement witness of quantum criticality in the two-impurity Kondo model, which has experimental realizations in terms of coupled quantum dots and magnetic impurities added to surfaces. We use density-matrix renormalization group and numerical renormalization group calculations to resolve the non-Fermi-liquid critical point separating two independently Kondo-screened impurities from an inter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.12317","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.12317/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2608.12317","created_at":"2026-08-13T01:30:48.073681+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.12317v1","created_at":"2026-08-13T01:30:48.073681+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.12317","created_at":"2026-08-13T01:30:48.073681+00:00"},{"alias_kind":"pith_short_12","alias_value":"KBVUTJ7G7OQ2","created_at":"2026-08-13T01:30:48.073681+00:00"},{"alias_kind":"pith_short_16","alias_value":"KBVUTJ7G7OQ2EM36","created_at":"2026-08-13T01:30:48.073681+00:00"},{"alias_kind":"pith_short_8","alias_value":"KBVUTJ7G","created_at":"2026-08-13T01:30:48.073681+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN","json":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN.json","graph_json":"https://pith.science/api/pith-number/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/graph.json","events_json":"https://pith.science/api/pith-number/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/events.json","paper":"https://pith.science/paper/KBVUTJ7G"},"agent_actions":{"view_html":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN","download_json":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN.json","view_paper":"https://pith.science/paper/KBVUTJ7G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.12317&json=true","fetch_graph":"https://pith.science/api/pith-number/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/graph.json","fetch_events":"https://pith.science/api/pith-number/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/action/storage_attestation","attest_author":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/action/author_attestation","sign_citation":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/action/citation_signature","submit_replication":"https://pith.science/pith/KBVUTJ7G7OQ2EM36VDJIZ2FOQN/action/replication_record"}},"created_at":"2026-08-13T01:30:48.073681+00:00","updated_at":"2026-08-13T01:30:48.073681+00:00"}