A constant equation of state for quintessence ?
Elisa Di Pietro, Jacques Demaret
TL;DR
This paper examines whether assuming a constant equation of state for quintessence is valid, revealing that such an assumption significantly constrains the form of the scalar potential used in models of cosmic acceleration.
Contribution
It demonstrates that a constant equation of state imposes strong restrictions on the scalar potential in quintessence models.
Findings
Constant equation of state constrains scalar potential form
Assumption impacts quintessence model viability
Highlights limitations of simplified quintessence models
Abstract
Quintessence is often invoked to explain the universe acceleration suggested by the type Ia supernovae observations. The aim of this letter is to study the validity of using a constant equation of state for quintessence models. We shall show that this hypothesis strongly constraint the form of the scalar potential.
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