Bare and effective fluid description in brane world cosmology

Norman Cruz; Samuel Lepe; Francisco Peña; Joel Saavedra

doi:10.1140/epjc/s10052-009-1226-5

Bare and effective fluid description in brane world cosmology

Norman Cruz, Samuel Lepe, Francisco Peña, Joel Saavedra

INSTITUTE OF PHYSICS

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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.

Original language	English
Pages (from-to)	289-293
Number of pages	5
Journal	European Physical Journal C
Volume	66
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-009-1226-5
State	Published - Mar 2010

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title = "Bare and effective fluid description in brane world cosmology",

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 ωeff =-1.",

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AU - Lepe, Samuel

AU - Peña, Francisco

AU - Saavedra, Joel

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AB - 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 ωeff =-1.

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Bare and effective fluid description in brane world cosmology

Abstract

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