Stability Issues for w < -1 Dark Energy

Details Stability Issues for w < -1 Dark Energy Stability Issues for w < -1 Dark Energy

2003-02-01

arxiv.org/abs/hep-th/0302007v3

Mod.Phys.Lett.A19:801,2004

Physics

High Energy Physics

High Energy Physics - Theory

9 pages LaTeX. Significantly rewritten (including abstract)

Scientific paper

10.1142/S0217732304013866

Precision cosmological data hint that a dark energy with equation of state $w = P/\rho < -1$ and hence dubious stability is viable. Here we discuss for any $w$ nucleation from $\Lambda > 0$ to $\Lambda = 0$ in a first-order phase transition. The critical radius is argued to be at least of galactic size and the corresponding nucleation rate is glacial, thus underwriting the dark energy's stability and rendering remote any microscopic effect.

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