2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226201We revisit the persistent flow of a superfluid in a thin wavy-rough annulus. The existence of a phase memory around this thin corrugated annulus is shown to be responsible for the energy minima with a periodic dependence on the total momentum which is directly related to the quantization of circulation. We also illustrate the general features using the ideal Bose gas as an example.3 figuresGeneral Physicstext