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w and w' of Scalar Field Models of Dark Energy

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arxiv astro-ph/0510598 v3 pith:U5L53KKD submitted 2005-10-20 astro-ph hep-ph

classification astro-phhep-ph
keywords darkenergyboundsderivefieldmodelsplanescalar
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Important observables to reveal the nature of dark energy are the equation of state $w$ and its time derivative in units of the Hubble time $w'$. Recently, it is shown that the simplest scalar field models of dark energy (quintessence) occupy rather narrow regions in the $w-w'$ plane. We extend the $w-w'$ plane to $w<-1$ and derive bounds on $w'$ as a function of $w$ for tracker phantom dark energy. We also derive bounds on tracker k-essence.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Beyond $j=1$: Observational Constraints on Almost-$\Lambda$CDM Cosmologies

    astro-ph.CO 2026-07 conditional novelty 4.0 of 10

    Current BAO+CMB+SN data confine the cosmic jerk to within a few percent of the LambdaCDM value j=1 and yield a reconstructed dark-energy equation of state that remains close to w=-1.

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