Dilaton Coupled Quintessence Model in the $\omega -{\omega }^{\prime }$ Plane

Abstract

In this paper, we regard dilaton in Weyl-scaled induced gravitational theory as a coupled quintessence. Based on this consideration, we investigate the dilaton coupled quintessence(DCQ) model in $\omega -{\omega }^{\prime }$ plane, which is defined by the equation of state parameter for the dark energy and its derivative with respect to $N$(the logarithm of the scale factor $a$). We find the scalar field equation of motion in $\omega -{\omega }^{\prime }$ plane, and show mathematically the property of attractor solutions which correspond to ${\omega }_{\sigma }\sim -1$, ${\Omega }_{\sigma }=1$. Finally, we find that our model is a tracking one which belongs to "freezing" type model classified in $\omega -{\omega }^{\prime }$ plane.

7 pages, 4 figures, some references added

References in corpus (7)

• Cosmological Evolution of a Quintom Model of Dark Energy
• The holographic dark energy in non-flat Brans-Dicke cosmology
• Interacting holographic dark energy model in non-flat universe
• Bulk-Brane Interaction and Holographic Dark Energy
• The Evolution of Universe with th B-I Type Phantom Scalar Field
• Dark Energy and Dilaton Cosmology
• Quantum Cosmology and Dark Energy Model of Born-Infeld Type Scalar Field

Cited by in corpus (2)

• Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
• Statefinder Diagnostic for Dilaton Dark Energy