Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-05-19
Phys.Lett.B690:407-412,2010
Physics
High Energy Physics
High Energy Physics - Theory
v1:8 pages, revtex4, no figures, to appear in Phys. Lett. B; v2: version to match published version in PLB, corrections in ERR
Scientific paper
10.1016/j.physletb.2010.05.052
Various theories of Quantum Gravity predict modifications of the Heisenberg Uncertainty Principle near the Planck scale to a so-called Generalized Uncertainty Principle (GUP). In some recent papers, we showed that the GUP gives rise to corrections to the Schrodinger equation, which in turn affect all quantum mechanical Hamiltonians. In particular, by applying it to a particle in a one dimensional box, we showed that the box length must be quantized in terms of a fundamental length (which could be the Planck length), which we interpreted as a signal of fundamental discreteness of space itself. In this paper, we extend the above results to a relativistic particle in a rectangular as well as a spherical box, by solving the GUP-corrected Klein-Gordon and Dirac equations, and for the latter, to two and three dimensions. We again arrive at quantization of box length, area and volume and an indication of the fundamentally grainy nature of space. We discuss possible implications.
Ali Ahmed Farag
Das Saurya
Vagenas Elias C.
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