Time and irreversibility in an accelerating universe

TL;DR

This paper explores the connection between the irreversibility of processes in the universe and the dynamics of space-time, emphasizing how cosmological horizons influence local electromagnetic events within the framework of modern cosmology.

Contribution

It analyzes how cosmological horizons enable a coupling between the universe's global state and local electromagnetic processes, linking irreversibility with space-time dynamics.

Findings

Cosmological horizons facilitate coupling between global and local phenomena.

Irreversibility in the universe is connected to space-time dynamics.

The study bridges thermodynamic irreversibility with cosmological models.

Abstract

It is a remarkable fact that all processes occurring in the observable Universe are irreversible, whereas the equations through which the fundamental laws of physics are formulated are invariant under time reversal. The emergence of irreversibility from the fundamental laws has been a topic of consideration by physicists, astronomers and philosophers since Boltzmann's formulation of his famous "H" theorem. In this paper we shall discuss some aspects of this problem and its connection with the dynamics of space-time, within the framework of modern cosmology. We conclude that the existence of cosmological horizons allows a coupling of the global state of the Universe with the local events determined through electromagnetic processes.