Discriminating between models for the dark energy

Details Discriminating between models for the dark energy Discriminating between models for the dark energy

2002-11-07

arxiv.org/abs/hep-ph/0211109v3

Phys.Rev. D67 (2003) 083520

Physics

High Energy Physics

High Energy Physics - Phenomenology

Additional references, expanded discussion of entropy including a new figure

Scientific paper

10.1103/PhysRevD.67.083520

Recent measurements suggest our universe has a substantial dark energy component, which is usually interpreted in terms of a cosmological constant. Here we examine how much the form of this dark energy can be modified while still retaining an acceptable fit to the high redshift supernova data. We first consider changes in the dark energy equation of state and then explore a model in which the dark energy is interpreted as a fluid with a bulk viscosity.

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