Constraining the quintessence equation of state with SnIa data and CMB peaks

Abstract

Quintessence has been introduced as an alternative to the cosmological constant scenario to account for the current acceleration of the universe. This new dark energy component allows values of the equation of state parameter wQ ≥ −1, and in principle measurements of cosmological distances to Type Ia supernovae can be used to distinguish between these two… (More)

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