Sharif Digital Repository

Bohm theory is an alternative for standard quantum mechanics which, provides a deterministic description for physical microsystems. In this theory every physical system, describes as a quantum particle which guided by a correspondiente wave. In stationary states every wave-particle, depends on its initial conditions, is at rest in different points. As an example in hydrogen atom, stationary states means electron, with constant radius and polar angle, has a circular motion in planes which is parallel with xy plane. In this thesis the stationary trajectories of hydrogen atom has been reconsidered and new trajectories are sketched. Also by extension the discussion to the macrosystems, we study... 

Up to this day, no conflict ever observed between experiments and the predictions of quantum mechanics. Scientists are in the belief that quantum mechanics is a universal theory and all the systems, even the classical ones, are quantum mechanical in their nature. In this regard, modeling the Earth-Sun dynamics using Hydrogen atom Hamiltonian has been addressed. Since we understand the classical systems with trajectories, we used Bohmian mechanics as an alternative way to study the Earth-Sun dynamics in a quantum fashion. Moreover, for better understanding the concept of the quantum to classical transition, we studied quantum thermodynamics. Accordingly, we described open quantum systems in...