Cosmological constraints on superconducting dark energy models

TL;DR

This paper explores superconducting dark energy models within a scalar-vector-tensor framework, testing their compatibility with cosmological data and finding that certain models can mimic or unify dark matter and dark energy.

Contribution

It introduces a novel superconducting dark energy model with gauge invariance and tests its cosmological viability against observational data.

Findings

Electric-type model fits data well, including the ΛCDM limit.

Magnetic-type model constrains parameters for dark matter and dark energy unification.

Some models allow for a superposition of cosmological constant and dynamic dark energy.

Abstract

We consider cosmological tests of a scalar-vector-tensor gravitational model, in which the dark energy is included in the total action through a gauge invariant, electromagnetic type contribution. The ground state of dark energy, corresponding to a constant potential $V$ is a Bose-Einstein type condensate with spontaneously broken U(1) symmetry. In another words dark energy appears as a massive vector field emerging from a superposition of a massless vector and a scalar field, the latter corresponding to the Goldstone boson. Two particular cosmological models, corresponding to pure electric and pure magnetic type potentials, respectively are confronted with Type IA Supernovae and Hubble parameter data. In the electric case good fit is obtained along a narrow inclined stripe in the $\Omega _{m}-\Omega _{V}\,$ parameter plane, which includes the $\Lambda $CDM limit as the best fit. The other points on this admissible region represent superconducting dark energy as a sum of a cosmological constant and a time-evolving contribution. In the magnetic case the cosmological test selects either i) parameter ranges of the superconducting dark energy allowing for the standard baryonic plus dark matter or ii) a unified superconducting dark matter and dark energy model, additionally including only the baryonic sector.