Cosmic coincidence problem and variable constants of physics

Abstract

The standard model of cosmology is investigated using time dependent cosmological constant $\Lambda$ and Newton's gravitational constant $G$. The total energy content is described by the modified Chaplygin gas equation of state. It is found that the time dependent constants coupled with the modified Chaplygin gas interpolate between the earlier matter to the later dark energy dominated phase of the universe. We also achieve a convergence of parameter $\omega \to -1$, with minute fluctuations, showing an evolving $\omega$. Thus our model fairly alleviates the cosmic coincidence problem which demands $\omega =-1$ at present time.

27 pages, 15 figures

References in corpus (6)

• Interacting holographic generalized Chaplygin gas model
• Toward a solution of the coincidence problem
• Charged Black Holes in Phantom Cosmology
• Interacting Modified Variable Chaplygin Gas in Non-flat Universe
• Constraints on coupling constant between dark energy and dark matter
• Interacting Dark Energy with Inhomogeneous Equation of State

Cited by in corpus (2)

• Holographic dark energy with varying gravitational constant
• Constraints on coupling constant between dark energy and dark matter