ABSTRACT
There exists an intimate connection between the energy spectrum and the liquid structure factor (Feynman 5 ). Let us investigate an excited state of a liquid made up of Bose particles. The wave function of this state will be assumed to be a symmetric sum () ∑ a f ( r a ) ⋅ Φ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429502897/20d72e0b-9d39-4175-acc6-a943547edf8a/content/eq71.tif"/>
