k-essential phantom energy: doomsday around the corner?

By P. Gonzalez-diaz. 2003

200 citations recorded by the source corpus.

In spite of its rather weird properties which include violation of the dominant-energy condition, the requirement of superluminal sound speed and increasing vacuum-energy density, phantom energy has recently attracted a lot of scientific and popular interests. In this Letter it is shown that in the framework of a general k-essence model, vacuum phantom energy leads to a cosmological scenario having negative sound speed and a big rip singularity, where the field potential also blows up, which might occur at an almost arbitrarily near time in the future that can still be comfortably accommodated within current observational constraints.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3933ad42b1a7a7d8885f310f1b20e897001b63d2

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Exotic solutions in General Relativity: Traversable wormholes and 'warp drive' spacetimes (2007, background): “It was shown that using k−essence dark energy also leads to the big rip [166], although, in an interesting article [167], considering a generalized Chaplygin gas the big rip may be avoided altogether.”