{"paper":{"title":"Lattice Unitarity: Saturated Collisional Resistivity in Hubbard Metals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"In strongly interacting lattice metals, collisional resistivity saturates to a constant value independent of interaction strength.","cross_cats":["physics.atom-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Antoine Lefebvre, Benjamin Driesen, Cora J. Fujiwara, Frank Corapi, Fr\\'ed\\'eric Chevy, Joseph H. Thywissen, Robyn T. Learn, Xavier Leyronas","submitted_at":"2025-10-22T09:12:52Z","abstract_excerpt":"We investigate the interaction-induced resistivity of ultracold fermions in a three-dimensional optical lattice. In situ observations of transport dynamics enable the determination of real and imaginary resistivity. In the strongly interacting metallic regime, we observe a striking saturation of the current-dissipation rate towards a value that is independent of the interaction strength. This phenomenon is quantitatively captured by a dissipation model that uses a renormalized two-body scattering matrix. We further measure the temperature dependence of resistivity in the strongly interacting l"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"In the strongly interacting metallic regime, we observe a striking saturation of the current-dissipation rate towards a value that is independent of the interaction strength. This phenomenon is quantitatively captured by a dissipation model that uses a renormalized two-body scattering matrix.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that a renormalized two-body scattering matrix remains sufficient to describe dissipation even in the strongly interacting many-body regime, without requiring explicit inclusion of higher-order scattering processes or lattice-specific corrections beyond renormalization.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Saturation of collisional resistivity to an interaction-independent value is observed in strongly interacting ultracold fermions in a 3D lattice and captured by a renormalized two-body scattering model.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"In strongly interacting lattice metals, collisional resistivity saturates to a constant value independent of interaction strength.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"578e34c01e919b588a9736346000b27f27449681f94aa6768463c77657267ee2"},"source":{"id":"2510.19395","kind":"arxiv","version":3},"verdict":{"id":"6f03c553-2771-4ea3-9c15-35b88dde1cc5","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-18T05:02:36.872921Z","strongest_claim":"In the strongly interacting metallic regime, we observe a striking saturation of the current-dissipation rate towards a value that is independent of the interaction strength. This phenomenon is quantitatively captured by a dissipation model that uses a renormalized two-body scattering matrix.","one_line_summary":"Saturation of collisional resistivity to an interaction-independent value is observed in strongly interacting ultracold fermions in a 3D lattice and captured by a renormalized two-body scattering model.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that a renormalized two-body scattering matrix remains sufficient to describe dissipation even in the strongly interacting many-body regime, without requiring explicit inclusion of higher-order scattering processes or lattice-specific corrections beyond renormalization.","pith_extraction_headline":"In strongly interacting lattice metals, collisional resistivity saturates to a constant value independent of interaction strength."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2510.19395/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":43,"sample":[{"doi":"","year":null,"title":"and to control Joule heating [29] such that the aver- age temperature is relatively constant across the conduc- tivity spectrum. We find that|R x|≲1µm is typically required to meet these constraints. ","work_id":"2d7f6b9f-9dc4-4194-b8ef-030851470987","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1993,"title":"E. Tiesinga, B. J. Verhaar, and H. T. C. Stoof, Thresh- old and resonance phenomena in ultracold ground-state collisions, Phys. Rev. A47, 4114 (1993)","work_id":"a8631fb6-8a49-4b57-9e46-392cc04ee3a1","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2010,"title":"C. Chin, R. Grimm, P. Julienne, and E. Tiesinga, Fes- hbach resonances in ultracold gases, Reviews of Modern Physics82, 1225 (2010)","work_id":"9dd2e6db-f150-49aa-8cd8-d4b885e9e3bc","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2012,"title":"Zwerger, ed.,The BCS-BEC Crossover and the Uni- tary Fermi Gas(Springer, Berlin, 2012)","work_id":"12af2eae-f698-41b4-82b4-674c34c35821","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2008,"title":"I. Bloch, J. Dalibard, and W. Zwerger, Many-body physics with ultracold gases, Rev. Mod. Phys.80, 885 (2008)","work_id":"ded9f019-408c-4f9e-8ddc-05b93b87ebcc","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":43,"snapshot_sha256":"d27e331289c976fa89fcf3c8b82ef6d0f35b61c20699592840aec1af06f2c6dc","internal_anchors":0},"formal_canon":{"evidence_count":1,"snapshot_sha256":"e34f063f0444b8381296153dbd897c7b75ed140bcae9636be2bfb54bbff02b9d"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}