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The European Physical Journal C

, Volume 66, Issue 1–2, pp 289–293 | Cite as

Bare and effective fluid description in brane world cosmology

  • Norman Cruz
  • Samuel Lepe
  • Francisco Peña
  • Joel Saavedra
Regular Article - Theoretical Physics

Abstract

An effective fluid description, for a brane world model in five dimensions, is discussed for both signs of the brane tension. We found several cosmological scenarios where the effective equation differs widely from the bare equation of state. For universes with negative brane tension, with a bare fluid satisfying the strong energy condition, the effective fluid can cross the barrier ω eff=−1.

Keywords

Friedmann Equation Brane World Strong Energy Condition Brane Tension Loop Quantum Cosmology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2009

Authors and Affiliations

  • Norman Cruz
    • 1
  • Samuel Lepe
    • 2
  • Francisco Peña
    • 3
  • Joel Saavedra
    • 2
  1. 1.Departamento de Física, Facultad de CienciaUniversidad de SantiagoSantiagoChile
  2. 2.Instituto de FísicaPontificia Universidad Católica de ValparaísoValparaísoChile
  3. 3.Departamento de Ciencias Físicas, Facultad de Ingeniería, Ciencias y AdministraciónUniversidad de La FronteraTemucoChile

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