Quintessence reconstructed : New constraints and tracker viability

  title={Quintessence reconstructed : New constraints and tracker viability},
  author={Martin Sahl'en and Andrew R. Liddle and David Parkinson},
  journal={Physical Review D},
We update and extend our previous work reconstructing the potential of a quintessence field from current observational data. We extend the cosmological data set to include new supernova data, plus information from the cosmic microwave background and from baryon acoustic oscillations. We extend the modeling by considering Pade approximant expansions as well as Taylor series, and by using observations to assess the viability of the tracker hypothesis. We find that parameter constraints have… 
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