Massive particle pair production and oscillation in Friedman Universe: dark energy and matter interaction

Understand

The classical Friedman equations of time-varying Hubble function $H$, dark-energy and matter densities couple to quantised field equations for massive modes $M\gg H$.

• Numerically solving these equations, we show the particle-antiparticle pairs production and oscillation in microscopic time scale ${\mathcal O}(M^{-1})$.
• A massive pair plasma state is formed in macroscopic time scale ${\mathcal O}(H^{-1})$.
• Its density and pressure introduce the interaction of matter and dark energy densities in the Friedman equations.