{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"1f28888321dd43c1384de3bd0faaffa429c6f1ed0d2da84191c187fd64271a42","created":"2026-10-03T07:18:04Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"4a8be66e82fa54872d63284dec2b114d319b0d6d21dc9ebb6a95e5e808b5dca7","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"fluid.quantum-turbulence.inertial-intermittency","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"Above about one kelvin, superfluid helium is a mixture of a superfluid and a normal fluid, and its turbulence shows the same average spectrum as water. Whether its rare violent fluctuations are also the same at every temperature is disputed.","posed_since":"","precise":"In quasiclassical turbulence of 4He between about 1.2 K and $T_{\\lambda}=2.17\\,\\mathrm{K}$, are the inertial-range velocity structure-function exponents $\\zeta_p$ equal to the classical values for all superfluid fractions $\\rho_s/\\rho$, or does intermittency change where $\\rho_s/\\rho$ is small or close to 1? Answer: $\\zeta_p(T)$ for p up to 6 with error bars.","problem_ref":null,"references":"","settled_by":"Probe measurements with characterized response resolving inertial-range increments at several temperatures in one flow, compared with two-fluid simulations.","status_note":"Simulations since about 2013 report temperature-dependent intermittency, while probe experiments (about 2017) find none; the disagreement is unresolved.","title":"Is inertial-range intermittency of superfluid turbulence the same as classical?","topic_ref":"cfe86b913c28db61b8da643149e508af2654c7237f0b6efa1efaa4c2c1fe95b1"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"536ae98e110c3bdc12ddddcc21ce8055754974b618900ddcf477cf0b72ddd522","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"fb4eb260789d1f0fa1941ff851da8be6c3058338c64f6ac3a0f677dc693a4f20","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"-sX4E7wv-2jZTHLSwZbY3kC0hudEtpugD6b1dpGpjZyrUjPGPmFsq4j27WvKN3xY3b-MlXyWZLil01MTkWOACw"},"schema":"pubphys.envelope/1"},"record_hash":"536ae98e110c3bdc12ddddcc21ce8055754974b618900ddcf477cf0b72ddd522","leaf_index":1421}