Modeling effective FRW cosmologies with perfect fluids from states of the hybrid quantum Gowdy model

Beatriz Elizaga Navascués, Mercedes Martín-Benito, and Guillermo A. Mena Marugán
Phys. Rev. D 91, 024028 – Published 22 January 2015

Abstract

We employ recently developed approximation methods in the hybrid quantization of the Gowdy T3 model with linear polarization and a massless scalar field to obtain physically interesting solutions of this inhomogeneous cosmology. More specifically, we propose some particular approximate solutions of the quantum Gowdy model constructed in such a way that, for the Hamiltonian constraint, they effectively behave as those corresponding to a flat homogeneous and isotropic universe filled with a perfect fluid, even though these quantum states are far from being homogeneous and isotropic. We analyze how one can get different perfect fluid effective behaviors, including the cases of dust, radiation, and a cosmological constant.

  • Figure
  • Received 9 September 2014

DOI:https://doi.org/10.1103/PhysRevD.91.024028

© 2015 American Physical Society

Authors & Affiliations

Beatriz Elizaga Navascués1,2,*, Mercedes Martín-Benito3,†, and Guillermo A. Mena Marugán2,‡

  • 1Universidad Complutense de Madrid, 28040 Madrid, Spain
  • 2Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain
  • 3Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands

  • *belizaga@estumail.ucm.es
  • mmartin@hef.ru.nl
  • mena@iem.cfmac.csic.es

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Vol. 91, Iss. 2 — 15 January 2015

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