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JETP7(1958) 996","work_id":"59767812-04e1-4ffb-9b1b-ed8ca7926cae","year":1958},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"G. M. Eliashberg,Sov. Phys. JETP11(1960) 696","work_id":"8a70b395-285e-4a2b-8308-c78a3a806095","year":1960},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":4,"title":"G. Bergmann and D. Rainer,Z. Phys.263(1973) 59","work_id":"b6da7e96-977b-423a-99c1-9229ce0867f3","year":1973},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":5,"title":"A. S. Alexandrov,Europhys. Lett.56(2001) 92","work_id":"327409d7-181b-49ce-ac60-3b80e5e594f9","year":2001}],"snapshot_sha256":"fc68cea4d572b240403c7183cb474fe8c88c27b0d7610c7cc24c47553e38d6d3"},"source":{"id":"2605.16625","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T20:39:14.736775Z","id":"ddff43d8-d407-4cd5-97b8-91682c8bc664","model_set":{"reader":"grok-4.3"},"one_line_summary":"In Peierls electron-phonon models, small but light bipolarons form a dilute s-wave superconductor with Tc/Ω exceeding the Migdal-Eliashberg bound, as shown by sign-problem-free QMC simulations that remain robust to Coulomb repulsion.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Phonon-modulated hopping creates light bipolarons that superconduct above the conventional temperature bound.","strongest_claim":"Using sign-problem-free quantum Monte Carlo simulations of a bond-Peierls model on the square and cubic lattices, a dilute liquid of such bipolarons forms an s-wave superconductor with a Tc/Ω that significantly exceeds the conventional bound, that this conclusion is robust against screened Coulomb repulsion, and that Tc/Ω remains above the bound in presence of strong long-range Coulomb repulsion.","weakest_assumption":"The premise that bipolarons formed by phonon-modulated hopping remain sufficiently light and mobile to condense into a dilute superconducting liquid at the simulated densities and couplings, rather than localizing or becoming heavy as in Holstein models; this enters via the instanton analysis and QMC results on specific lattices."}},"verdict_id":"ddff43d8-d407-4cd5-97b8-91682c8bc664"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8ad7296b5f5d2210a0b9bc33e7bd095f46197a5860c263742f566557dff264f9","target":"record","created_at":"2026-05-20T00:02:33Z","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":"854246f8e4b81cc37a1c1bfceeee4a953a9aab41f172657b75bfcef71c154980","cross_cats_sorted":["cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2026-05-15T20:46:05Z","title_canon_sha256":"dd3fb670ced1ff785abd92af06896bdbd24b350a4df0212b137178ce041d2f10"},"schema_version":"1.0","source":{"id":"2605.16625","kind":"arxiv","version":1}},"canonical_sha256":"f7477c9d60ad4dbcd19cfe0ce90ad5b3a40497c625d79dad08d00b9f73d03d93","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7477c9d60ad4dbcd19cfe0ce90ad5b3a40497c625d79dad08d00b9f73d03d93","first_computed_at":"2026-05-20T00:02:33.073108Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:02:33.073108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BrYVG+9CWnW840Ys6pdokbLPK9/tpaDTKgRatuBiX9fVJOoSfebiWiIzdMPciwswo7MQO5jUsdiXZG87wsLQCw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:02:33.073975Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.16625","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba2fbf25a428b75aa73f83c11ded33a380af053b5fdb0ff8a63f14f65c258868","sha256:8ad7296b5f5d2210a0b9bc33e7bd095f46197a5860c263742f566557dff264f9","sha256:f2823494629a63113368f3a9527ad3294ed0ea62d3f4ff0d28edb52c41a1bc33"],"state_sha256":"4a22ea457b1492444aa386565aeb420123e50296037bcb65e0770480acf4420a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m7X7aCD/DNpFgfbCw/ykuqxjgqGIMc9lb/RjMaoPGgAHKF8YFDX1HZmJIGtq5/k12ELsYVG6sVohKG2vpYZhAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T05:36:31.710299Z","bundle_sha256":"0d5784f96e6efa6aa84663996731fd646ecc7438f472d4f368a69142cb5f2ac6"}}