Radiation can never again dominate Matter in a Vacuum Dominated Universe

Abstract

We demonstrate that in a vacuum-energy-dominated expansion phase, surprisingly neither the decay of matter nor matter-antimatter annihilation into relativistic particles can ever cause radiation to once again dominate over matter in the future history of the universe.

updated version, as it will appear in Phys. Rev D. Title change, and some other minor alterations

References in corpus (1)

• Cosmologies with Energy Exchange

Cited by in corpus (4)

• Model-Independent Bound on the Dark Matter Lifetime
• Circumscribing Late Dark Matter Decays Model Independently
• The Return of a Static Universe and the End of Cosmology
• Evolution of decaying particles and decay products in various scenarios for the future expansion of the universe