Kitamura, Toyoyuki - In: Physica A: Statistical Mechanics and its Applications 290 (2001) 1, pp. 39-59
The dielectric formulation for the excitations in a bose-condensed liquid is developed from the viewpoint of the spontaneous breakdown of the phase symmetry. The excitations are hybridized between the sound and the atomic excitations in the normal state through the condensate. The sound and the...
