Discreteness of space from GUP II: Relativistic wave equations

By Saurya Das, E. Vagenas, A. Ali. 2010

270 citations recorded by the source corpus.

Abstract 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 Letter, 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.

View Paper: https://www.semanticscholar.org/paper/709905c1b674f22b44473a5952e1dd3b2a2ef164

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Citations in the corpus

• Minimal Length Scale Scenarios for Quantum Gravity (2012, methodology): “The Klein–Gordon equation and the Dirac particle in a rectangular and spherical box has been examined in [98].”
• The effects of minimal length and maximal momentum on the transition rate of ultra cold neutrons in gravitational field (2011, methodology): “In this paper, we consider a recently proposed GUP which is consistent with string theory, doubly special relativity and black hole physics and predicts both a minimum measurable length and a maximum measurable momentum [21, 22, 23].”
• Generalized Uncertainty Principle: Approaches and Applications (2014, methodology): “Comparison KMM [29] ADV [63, 113] Pedram [64]”