Plausible faster-than-light displacements in a two-sheeted spacetime - High Energy Physics - TheoryReport as inadecuate




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Abstract: In this paper, we explore the implications of a two-point discretization ofan extra-dimension in a five-dimensional quantum setup. We adopt a pragmaticattitude by considering the dynamics of spin-half particles through thesimplest possible extension of the existing Dirac and Pauli equations. It isshown that the benefit of this approach is to predict new physical phenomenawhile maintaining the number of constitutive hypothesis at minimum. As the moststriking feature of the model, we demonstrate the possibility of fermionicmatter oscillations between the two four-dimensional sections and hyper-fastdisplacements in case of asymmetric warping without conflicting specialrelativity. This result, similar to previous reported ones in brane-worldtheories, is completely original as it is derived by using quantum mechanicsonly without recourse to general relativity and bulk geodesics calculation. Themodel allows causal contact between normally disconnected regions. If it provesto be physically founded, its practical aspects could have deep implicationsfor the search of extra-dimensions.



Author: Fabrice Petit, Michael Sarrazin

Source: https://arxiv.org/







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