{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"f4a79223d7eecfd3780fcd08c0b4a26e73f47ffc18bf59f47477879d43996277","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":["ai:gpt-5.5"],"kind":"seed"},"parents":["0034959e38349bf463a272586e0316ab325f44f420ee4cb10006c7684e747c1d","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"1684e22debdf351f623d5b88c75b63a92a585fe35037a3eb4efb726b4a757279","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":["ai:gpt-5.5"],"external_id":"cm.hydrides.eliashberg-predictive","kind":"well-posed","literature_status":"partially-resolved","n":"2","parents":[],"plain":"Hydride superconductivity is thought to come from lattice vibrations, which theory can compute, but light hydrogen atoms vibrate strongly and quantum mechanically, which complicates predictions.","posed_since":"","precise":"Determine whether Migdal-Eliashberg theory with first-principles electron-phonon coupling, including quantum anharmonic lattice dynamics and zero-point motion and with $\\mu*$ computed or fixed in advance, predicts $T_{c}$ of compressed hydrides ($\\mathrm{H_3S}$, $\\mathrm{LaH_{10}}$, $\\mathrm{CaH_6}$, $\\mathrm{YH_6}$) within 10 percent and their isotope coefficients. An answer is a blind prediction later confirmed or refuted by experiment.","problem_ref":"0034959e38349bf463a272586e0316ab325f44f420ee4cb10006c7684e747c1d","references":"","settled_by":"Published blind predictions of $T_c$ and isotope coefficient for a new hydride, followed by measurement.","status_note":"Calculations reproduce $T_{c}$ of $\\mathrm{H_3S}$ and $\\mathrm{LaH_{10}}$ approximately, but results depend on $\\mu*$ and on the treatment of anharmonicity.","title":"Can first-principles Eliashberg theory predict hydride $T_{c}$ within ten percent?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"5680108ef87cf521f3efc4d6dcaec689c5a1924e6d8da5f94f7fc689104418c6","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"70d9ba7035e8d5babf9a5fb1d2be2c80204047e648060971508e19bec977ee5a","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"x1br88FmBO8rUIl68w5z7ljRNT1hbSWPTumPK4HeKyGkNC8aJI4DhH6XiNlAt4SyjwDXcHcI4buLTdchxsDlCQ"},"schema":"pubphys.envelope/1"},"record_hash":"5680108ef87cf521f3efc4d6dcaec689c5a1924e6d8da5f94f7fc689104418c6","leaf_index":2858}