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- W3100538360 abstract "We consider the efficacy of using luminosity distance measurements of deep redshift supernovae to discriminate between two forms of dark energy, quintessence (a scalar field with canonical kinetic terms rolling down a potential) and k-essence (a scalar field whose cosmic evolution is driven entirely by nonlinear kinetic terms). The primary phenomenological distinction between the two types of models that can be quantified by supernova searches (at least in principle) is that the equation of state w≡p/ρ of quintessence is falling today while that of k-essence is rising. By simulating 105 possible datasets that SNAP could obtain, we show that even if the mass density Ωm is known exactly, an ambiguity remains that may not allow a definitive distinction to be made between the two types of theories." @default.
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- W3100538360 date "2001-01-01" @default.
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- W3100538360 title "Supernova data may be unable to distinguish between quintessence and k-essence" @default.
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