Study on the Phenomena of the System of Free Particles on the View Point of Natural Statistical Physics

In this paper, we study the phenomena of the system of free particles on the view point of natural statistical physics.
Thereby we derive the Schrödinger equation of this physical system and solve the initial value problem of this Schrödinger equation.
Thereby we obtain the structure of this physical system at the stationary state. Thus we obtain the information of the natural statistical distribution of the position variable and the momentum variable of this physical system.