Graphical and kinematical approach to cosmological horizons

L. J. Boya, M. A. Per, and A. J. Seguí
Phys. Rev. D 66, 064009 – Published 13 September 2002
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Abstract

We study the apparition of event horizons in accelerated expanding cosmologies. We give a graphical and analytical representation of the horizons using proper distances to coordinate the events. Our analysis is mainly kinematical. We show that, independently of the dynamical equations, all the event horizons tend in the future infinity to a given expression depending on the scale factor that we call asymptotic horizon. We also encounter a subclass of accelerating models without horizons. When the ingoing null geodesics do not change concavity in its cosmic evolution we recover the de Sitter and quintessence-Friedmann-Robertson-Walker models.

  • Received 30 May 2002

DOI:https://doi.org/10.1103/PhysRevD.66.064009

©2002 American Physical Society

Authors & Affiliations

L. J. Boya*, M. A. Per, and A. J. Seguí

  • Departamento de Física Teórica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain

  • *Email address: luisjo@posta.unizar.es
  • Email address: maper@jazzfree.com
  • Email address: segui@posta.unizar.es

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Issue

Vol. 66, Iss. 6 — 15 September 2002

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