Einstein’s Mistake: The Non-Objectivity of Spacetime Distortion

Pseudotachyonic Relativity (PtR) implicates the reality of negative energies and of two opposite time-flows in the Universe. Neither Newton's law of gravity neither General Relativity have been formulated taking these possibilities into account. Contrastively, however, both theories embrace the mathematical possibility of temporal reversal but not directly of negative energies. The concept of co-particles provides the foundations of a generic field theory on basis of positive and negative energies. Its basic propositions are summarized here. Newton's law of gravity is analysed and generalized to negative masses. Finally, some reflections on relativistic accelerated frames are brought forth, with a relevant conclusion: Einstein made a mistake when he pushed the equivalence between gravity and accelerated frames too far, establishing the reality of the curvature of spacetime. It seems that he took the effect as the cause. According to PtR, gravity is caused by mediator particles (gravitons or co-gravitons), exchanging energy and momentum and generating either attractive or repulsive fields; matter is pro-reactive to these fields, co-matter anti-reactive. As a result, from the point of view of accelerated frames, spacetime seems to be curved in symmetrical ways for matter and co-matter. That means, spacetime distortion is not an objective feature of the Universe: the force is real, the distortion is just appearance