Operational definition of (brane induced) space-time and constraints on the fundamental parameters

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dc.creatorMaziashvili, Michael
dc.date2007-08-10
dc.date.accessioned2026-07-07T11:52:55Z
dc.date.available2026-07-07T11:52:55Z
dc.descriptionFirst we contemplate the operational definition of space-time in four dimensions in light of basic principles of quantum mechanics and general relativity and consider some of its phenomenological consequences. The quantum gravitational fluctuations of the background metric that comes through the operational definition of space-time are controlled by the Planck scale and are therefore strongly suppressed. Then we extend our analysis to the braneworld setup with low fundamental scale of gravity. It is observed that in this case the quantum gravitational fluctuations on the brane may become unacceptably large. The magnification of fluctuations is not linked directly to the low quantum gravity scale but rather to the higher-dimensional modification of Newton's inverse square law at relatively large distances. For models with compact extra dimensions the shape modulus of extra space can be used as a most natural and safe stabilization mechanism against these fluctuations.
dc.description9 pages
dc.identifierhttps://arxiv.org/abs/0708.1472
dc.identifierhttp://arxiv.org/abs/0708.1472
dc.identifierPhys.Lett.B666:364-370,2008
dc.identifierdoi:10.1016/j.physletb.2008.07.084
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204354
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOperational definition of (brane induced) space-time and constraints on the fundamental parameters
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