https://doi.org/10.1140/epjc/s10052-017-5471-8
Regular Article - Theoretical Physics
Quantum mechanical look at the radioactive-like decay of metastable dark energy
1
Astronomical Observatory, Jagiellonian University, Orla 171, 30-244, Kraków, Poland
2
Mark Kac Complex Systems Research Centre, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
3
Institute of Physics, University of Zielona Góra, Prof. Z. Szafrana 4a, 65-516, Zielona Gora, Poland
* e-mail: marek.szydlowski@uj.edu.pl
Received:
6
November
2017
Accepted:
13
December
2017
Published online:
23
December
2017
We derive the Shafieloo, Hazra, Sahni and Starobinsky (SHSS) phenomenological formula for the radioactive-like decay of metastable dark energy directly from the principles of quantum mechanics. To this aim we use the Fock–Krylov theory of quantum unstable states. We obtain deeper insight on the decay process as having three basic phases: the phase of radioactive decay, the next phase of damping oscillations, and finally the phase of power-law decay. We consider the cosmological model with matter and dark energy in the form of decaying metastable dark energy and study its dynamics in the framework of non-conservative cosmology with an interacting term determined by the running cosmological parameter. We study the cosmological implications of metastable dark energy and estimate the characteristic time of ending of the radioactive-like decay epoch to be 
of the present age of the Universe. We also confront the model with astronomical data which show that the model is in good agreement with the observations. Our general conclusion is that we are living in the epoch of the radioactive-like decay of metastable dark energy which is a relict of the quantum age of the Universe.
© The Author(s), 2017
