Accelerated Expansion of the universe based on Particle Creation-Destruction Processes and Dark Energy in FLRW universes

TL;DR

This paper proposes a novel cosmological model where particle creation and destruction processes, involving dark energy and matter, explain the universe's accelerated expansion consistent with thermodynamics.

Contribution

It introduces a new model linking particle exchange with dark energy to the universe's acceleration, incorporating particle destruction and thermodynamics.

Findings

Derived equations for particle number variation in accelerated universes

Developed a model predicting dark energy properties and particle exchange processes

Supports the thermodynamic consistency of particle creation and destruction mechanisms

Abstract

Particle creation has been considered as a possible justification for the accelerated expansion of the universe, obeying the second law of thermodynamics, together with the possible existence of Dark Energy. This paper introduces the possibility that the destruction of baryonic and/or dark matter particles also verifies the second law of thermodynamics thanks to a particle exchange with dark energy. General equations for the variation of the number of particles in accelerated universes have been obtained. Finally, a new model of the universe has been developed which predicts dark energy properties as well as particle exchange processes between dark energy and baryonic and/or dark matter.