Abstract
The phenomenon of inertia is modeled by a new process, which semi-discretely changes the metrical scale of spacetime. This process explains inertia as a curved spacetime phenomenon, since all accelerating trajectories take place on geodesics of general relativity. By this approach inertial reference frames are Minkowskian manifolds imbedded in a five-dimensional space. It would imply a revised interpretation of special relativity, which preserves a universal temporal reference. If acceleration curves spacetime, it would also imply the existence of an energy-momentum tensor with net energy, which under certain conditions could become negative.
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Masreliez, C.J. Inertia and a fifth dimension—special relativity from a new perspective. Astrophys Space Sci 326, 281–291 (2010). https://doi.org/10.1007/s10509-009-0241-1
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DOI: https://doi.org/10.1007/s10509-009-0241-1