  We explore consistent application of quantum mechanics to the objects in the
Universe and in laboratories. The measurement dynamics in quantum mechanics is
modeled as a physical process of spontaneous symmetry breaking (SSB) which is
described by the generalized effective action method. A violation of the Bell
inequality is observed in this model and the generation of the density
fluctuations in the early Universe is described as the SSB process of the
spatially translational symmetry.
