Cosmological constant, matter, cosmic inflation and coincidence

Abstract

We present a possible understanding to the issues of cosmological constant, inflation, matter and coincidence problems based only on the Einstein equation and Hawking particle production. The inflation appears and results agree to observations. The CMB large-scale anomaly can be explained and the dark-matter acoustic wave is speculated. The entropy and reheating are discussed. The cosmological term ${\Omega }_{{}_{\Lambda }}$ tracks down the matter ${\Omega }_{{}_M}$ until the radiation-matter equilibrium, then slowly varies, thus the cosmic coincidence problem can be avoided. The relation between ${\Omega }_{{}_{\Lambda }}$ and ${\Omega }_{{}_M}$ is shown and can be examined at large redshifts.

A short letter to appear in Modern Physics Letters A. arXiv admin note: substantial text overlap with arXiv:1910.03938

References in corpus (2)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Cosmological constant vis-a-vis dynamical vacuum: bold challenging the $\Lambda$CDM

Cited by in corpus (2)

• Massive particle pair production and oscillation in Friedman Universe: dark energy and matter interaction
• Particle-antiparticle oscillation modes crossing horizon: baryogenesis and dark-matter waves