Theoretic Limits on the Equation of State Parameter of Quintessence

Abstract

The value of scalar field coupled to gravity should be less than the Planck scale in the consistent theory of quantum gravity. It provides a theoretic constraint on the equation of state parameter for the quintessence. In some cases our theoretic constraints are more stringent than the constraints from the present experiments.

4 pages, 2 figures; minor corrections and refs added

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• Observational Constraints on Hybrid Scale Factor in f(Q,T) Gravity with Anisotropic Space-Time
• Weak Gravity Conjecture for the Effective Field Theories with N Species
• Constraints on Dark Energy Models from Weak Gravity Conjecture
• Stationary Solution to Charged Hairy Black Hole in AdS4: Kasner Interior, Rotating Shock Waves, and Fast Scrambling
• Coupled Dark Energy field variation