Big bounce in dipole cosmology

Marco Valerio Battisti and Antonino Marcianò
Phys. Rev. D 82, 124060 – Published 28 December 2010

Abstract

We derive the cosmological big bounce scenario from the dipole approximation of loop quantum gravity. We show that a nonsingular evolution takes place for any matter field and that, by considering a massless scalar field as a relational clock for the dynamics, the semiclassical proprieties of a large class of initial states are preserved on the other side of the bounce. This model thus enhances the relation between loop quantum cosmology and the full theory.

  • Received 1 November 2010

DOI:https://doi.org/10.1103/PhysRevD.82.124060

© 2010 The American Physical Society

Authors & Affiliations

Marco Valerio Battisti1,2,* and Antonino Marcianò1,2,3,†

  • 1Centre de Physique Théorique, Case 907 Luminy, 13288 Marseille, France
  • 2Dipartimento di Fisica, Università di Roma “Sapienza”, P.le A. Moro 2, 00185 Roma, Italy
  • 3Department of Physics and Astronomy, Haverford College, Haverford, Pennsylvania 19041, USA

  • *battisti@icra.it
  • amarcian@haverford.edu

See Also

Triangulated loop quantum cosmology: Bianchi IX universe and inhomogeneous perturbations

Marco Valerio Battisti, Antonino Marcianò, and Carlo Rovelli
Phys. Rev. D 81, 064019 (2010)

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Issue

Vol. 82, Iss. 12 — 15 December 2010

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