Inertial Field Energy

The phenomenon of Inertia may be explained if the four-dimensional scale of spacetime were to change during acceleration. Although a dynamically changing scale cannot be modeled by coordinate transformation it is compatible with General Relativity, and it is observationally indistinguishable from Special Relativity, except that it admits cosmological simultaneity. The new theory explains the origin of the inertial force as being a curved spacetime phenomenon, with the implication that accelerating matter might influence the metrical scale of space and time and consequently also by General Relativity the energy-density of spacetime. A close correspondence is found between an inertial line-element and a gravitational line-element, both expressing energy density by Poisson’s equation. Under certain conditions the field energy induced by acceleration could become negative.