Antiscalar cosmological background

TL;DR

This paper explores an antiscalar model for dark energy, deriving it from thermodynamic stability and static Einstein-Maxwell equations, suggesting a quasi-electrostatic origin for the background field.

Contribution

It introduces a thermodynamically consistent antiscalar approach to dark energy, linking it to static Einstein-Maxwell solutions and electrostatic origins.

Findings

Antiscalar energy-momentum tensor has opposite sign to matter.

Background antiscalar field is of quasi-electrostatic origin.

Model derived from thermodynamic and static Einstein-Maxwell considerations.

Abstract

It is shown that the antiscalar approach to dark energy, whereby the energy-momentum tensor of the scalar field has the sign opposite to that of the rest of the matter, follows from the considerations of thermodynamic stability, as well as from the static limit of the Einstein-Maxwell equations. The same limit also demonstrates that the resulting background antiscalar field proves to be of quasi-electrostatic origin.