A single scalar field model of dark energy with equation of state crossing −1

By Mingzhe Li, Bo Feng, Xinmin Zhang. 2005

183 citations recorded by the source corpus.

In this paper we study the possibility of building models of dark energy with equation of state across −1 and propose explicitly a model with a single scalar field which gives rise to an equation of state larger than −1 in the past and less than −1 at the present time, consistent with the current observations.

Subfields: Astronomy and Astrophysics, Finance, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/993e156ca251c8b4fb98fa25fa37e1e28ff904e7

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Citations in the corpus

B-inflation (2005, background): “5 Note that, despite similarities with the model from [10], our system does not have any potential and cannot be reduced to the non-interacting two-field model [11] as it was in the reference above.”
Stability of phantom wormholes (2005, background): “However, recent fits to supernovae, CMB and weak gravitational lensing data indicate that an evolving equation of state ω crossing the phantom divide−1, is mildly favored, and several models have been proposed in the literature [6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16].”
Non-singular cosmology in a model of non-relativistic gravity (2009, background): “This is the so-called “quintom scenario” [12–15] in which the equation-of-state of the universe crosses the cosmological constant boundary.”
The effective theory of quintessence: the w < 1 side unveiled (2008, background): “Notice that, as detailed in Appendix A, we are interested in a regime where higher derivative terms do not introduce additional degrees of freedom (contrary to what happens for example in [5]).”