The evolution of the FRW universe with decaying metastable dark energy --- a dynamical system analysis

Understand

We investigate a cosmological model in which dark energy identified with the vacuum energy which is running and decaying.

• In this model vacuum is metastable and decays into a bare (true) vacuum.
• This decaying process has a quantum nature and is described by tools of the quantum decay theory of unstable systems.
• We have found formulas for an asymptotic behavior of the energy density of dark energy in the form of a series of inverse powers of the cosmological time.