Cosmic acceleration in screening hybrid quintessence model

Understand

A formalism for the appearance of dark energy in the matter dominated era, leading to a persistent de Sitter expansion at the late time is proposed.

• Our framework is a hybrid quintessence model with a non-minimal coupling to the Ricci scalar.
• Coupling to the curvature triggers the dark energy evolution, while the coupling of scalar fields drives this evolution to a de Sitter stable fixed point.
• These occur via successive $Z_2$ symmetry breakings.