Generalized uncertainty principles and localization in discrete space

Details Generalized uncertainty principles and localization in discrete space Generalized uncertainty principles and localization in discrete space

2011-12-05

arxiv.org/abs/1112.0994v1

Physics

High Energy Physics

High Energy Physics - Theory

26 pages

Scientific paper

Generalized uncertainty principles are able to serve as useful descriptions of some of the phenomenology of quantum gravity effects, providing an intuitive grasp on non-trivial space-time structures such as a fundamental discreteness of space, a universal bandlimit or an irreducible extendedness of elementary particles. In this article, uncertainty relations are derived by a moment expansion of states for quantum systems with a discrete coordinate, and correspondingly a periodic momentum. Corrections to standard uncertainty relations are found, with some similarities but also key differences to what is often assumed in this context. The relations provided can be applied to discrete models of matter or space-time, including loop quantum cosmology.

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