The Big-Bang singularity in the framework of a Generalized Uncertainty Principle

Marco Valerio Battisti, Giovanni Montani

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We analyze the quantum dynamics of the Friedmann-Robertson-Walker Universe in the context of a Generalized Uncertainty Principle. Since the isotropic Universe dynamics resembles that of a one-dimensional particle, we quantize it with the commutation relations associated to an extended formulation of the Heisenberg algebra. The evolution of the system is described in terms of a massless scalar field taken as a relational time. We construct suitable wave packets and analyze their dynamics from a quasi-classical region to the initial singularity. The appearance of a non-singular dynamics comes out as far as the behavior of the probability density is investigated. Furthermore, reliable indications arise about the absence of a big-bounce, as predicted in recent issues of loop quantum cosmology. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)96 - 101
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-3
Publication statusPublished - 15 Nov 2007
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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