Can dark energy evolve to the Phantom

  title={Can dark energy evolve to the Phantom},
  author={Alexander Vikman},
  journal={Physical Review D},
  • A. Vikman
  • Published 6 July 2004
  • Materials Science, Mathematics
  • Physical Review D
Dark energy with the equation of state $w(z)$ rapidly evolving from the dustlike ($w\ensuremath{\simeq}0$ at $z\ensuremath{\sim}1$) to the phantomlike ($\ensuremath{-}1.2\ensuremath{\lesssim}w\ensuremath{\lesssim}\ensuremath{-}1$ at $z\ensuremath{\simeq}0$) has been recently proposed as the best fit for the supernovae Ia data. Assuming that a dark energy component with an arbitrary scalar-field Lagrangian $p(\ensuremath{\varphi},{\ensuremath{\nabla}}_{\ensuremath{\mu}}\ensuremath{\varphi… 

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