Plausible "faster-than-light" displacements in a two-sheeted spacetime

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dc.creatorPetit, Fabrice
dc.creatorSarrazin, Michael
dc.date2007-06-27
dc.date2007-08-16
dc.date.accessioned2026-07-07T10:56:29Z
dc.date.available2026-07-07T10:56:29Z
dc.descriptionIn this paper, we explore the implications of a two-point discretization of an extra-dimension in a five-dimensional quantum setup. We adopt a pragmatic attitude by considering the dynamics of spin-half particles through the simplest possible extension of the existing Dirac and Pauli equations. It is shown that the benefit of this approach is to predict new physical phenomena while maintaining the number of constitutive hypothesis at minimum. As the most striking feature of the model, we demonstrate the possibility of fermionic matter oscillations between the two four-dimensional sections and hyper-fast displacements in case of asymmetric warping (without conflicting special relativity). This result, similar to previous reported ones in brane-world theories, is completely original as it is derived by using quantum mechanics only without recourse to general relativity and bulk geodesics calculation. The model allows causal contact between normally disconnected regions. If it proves to be physically founded, its practical aspects could have deep implications for the search of extra-dimensions.
dc.description17 pages, 1 figure. Final version. Accepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0706.4025
dc.identifierhttp://arxiv.org/abs/0706.4025
dc.identifierPhys.Rev.D76:085005,2007
dc.identifierdoi:10.1103/PhysRevD.76.085005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186428
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titlePlausible "faster-than-light" displacements in a two-sheeted spacetime
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