Quantum Gauge Theory of Gravity

The quantum gravity is formulated based on principle of local gauge invariance. The model discussed in this paper has local gravitational gauge symmetry and gravitational field is represented by gauge field. In leading order approximation, it gives out classical Newton's theory of gravity. It can also give out Einstein's field equation with cosmological constant. For classical tests, it gives out the same theoretical predictions as those of general relativity. This quantum gauge theory of gravity is a renormalizable quantum theory.