Turning big bang into big bounce. I. Classical dynamics

Piotr Dzierżak, Przemysław Małkiewicz, and Włodzimierz Piechocki
Phys. Rev. D 80, 104001 – Published 4 November 2009

Abstract

The big bounce (BB) transition within a flat Friedmann-Robertson-Walker model is analyzed in the setting of loop geometry underlying the loop cosmology. We solve the constraint of the theory at the classical level to identify physical phase space and find the Lie algebra of the Dirac observables. We express energy density of matter and geometrical functions in terms of the observables. It is the modification of classical theory by the loop geometry that is responsible for BB. The classical energy scale specific to BB depends on a parameter that should be fixed either by cosmological data or determined theoretically at quantum level, otherwise the energy scale stays unknown.

  • Figure
  • Received 21 July 2009

DOI:https://doi.org/10.1103/PhysRevD.80.104001

©2009 American Physical Society

Authors & Affiliations

Piotr Dzierżak*, Przemysław Małkiewicz, and Włodzimierz Piechocki

  • Theoretical Physics Department, Institute for Nuclear Studies, Hoża 69, 00-681 Warsaw, Poland

  • *pdzi@fuw.edu.pl
  • pmalk@fuw.edu.pl
  • piech@fuw.edu.pl

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Issue

Vol. 80, Iss. 10 — 15 November 2009

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