  In this paper, inspired by quantum field theory, or more specifically QED, we
propose a dynamical model for relativity. By adopting the approach provided by
this dynamical model, we provide a dynamical explanation for relativistic
phenomena such as length contraction, time dilation and clock
desynchronization. The result of the dynamical approach for clock
desynchronization is especially interesting. Our dynamical approach exhausts
the freedom for different clock synchronizations on frames accelerated from an
initial reference frame, which is allowed by Einstein's principle approach.
Furthermore, our dynamical approach arrives at the interesting conclusion that
Einstein's equivalence principle and gravitational redshift are necessary to
explain special relativistic clock desynchronization. This result shows that
special relativity by itself is an incomplete theory. If our dynamical model
assumptions are assumed to be valid at a fundamental level, it implies some
modifications to quantum field theory and general relativity via the
equivalence principle. These modifications have been discussed.
