The Influence of Evolving Dark Energy on Cosmology

Abstract

Observational evidence indicating that the expansion of the universe is accelerating has surprised cosmologists in recent years. Cosmological models have sought to explain this acceleration by incorporating `dark energy', of which the traditional cosmological constant is just one possible candidate. Several cosmological models involving an evolving equation of state of the dark energy have been proposed, as well as possible energy exchange to other components, such as dark matter. This paper summarises the forms of the most prominent models and discusses their implications for cosmology and astrophysics. Finally, this paper examines the current and future observational constraints on the nature of dark energy.

11 pages, 11 figures, to appear in Proceedings of the Astronomical Society of Australia

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• The Fine-Tuning of the Universe for Intelligent Life
• Interacting models may be key to solve the cosmic coincidence problem
• On Oscillating Dark Energy
• Relative Likelihood for Life as a Function of Cosmic Time
• Joining the Hubble Flow: Implications for Expanding Space
• Through the Looking Glass: Why the "Cosmic Horizon" is not a horizon
• The impact of dark energy on galaxy formation. What does the future of our Universe hold?
• On the Habitability of Our Universe