  As a serious attempt for constructing a new foundation for describing
micro-entities from a causal standpoint, it was explained before in [1, 2, 3]
that by unifying the concepts of information, matter and energy, each
micro-entity is assumed to be composed of a probability field joined to a
particle called a particle-field or PF system. The relativistic generalization
of this theory and its invariance under Lorentz transformation has been proved.
In this essay, based on the relativistic generalization of Schrodinger equation
derived in [4], we solve the relativistic Schrodinger equation for relativistic
micro-harmonic oscillator to find its energy. Also we obtain the energy
spectrum of Hydrogen atom that is the main purpose of this paper. We see that
the result is completely consistent with the relativistic correction to the
Hydrogen's energy in first-order perturbation theory.
