Theory 28/Cryogenics
Confinement Shifts the Transition
The claim
The superfluid transition in a confined geometry occurs at a temperature set by the ratio of pore size to the healing length rather than by the bulk transition alone.
01The mechanism
Confinement suppresses long-wavelength excitations; when the pore is comparable to the healing length, the ordered phase is destabilised.
02Predictions
- P1Transition should track the ratio.
- P2Pore size alone should mispredict across materials.
03Refutation
Transition tracking pore size would remove the healing-length term.