Light Scattering by Fluctuations in the Condensate of Superfluid 4He near Tλ

摘要: Density correlation function k ω is calculated on the basis of phenomenological equations macroscopic variables ρ, s , j \(\varPsi\), \(\varPsi^{*}\), near T λ . In particular “central peak” due to fluctuations in amplitude condensate field \(\varPsi\) carefully investigated. It concluded, however, that far less important than contributions from second sound regime ξ compared with Kretzen and Mikeska Hohenberg.