Quantum Remnant as Dark Energy and Dark Matter

TL;DR

This paper explores how a quantum remnant of a scalar field, stabilized by the uncertainty principle, could account for dark energy and dark matter, offering an alternative perspective to existing models.

Contribution

It introduces the concept of a quantum remnant as a source of dark energy and dark matter, highlighting its similarities and differences with the spintessence model.

Findings

Quantum remnant can serve as dark energy and dark matter.

Shares properties with the spintessence dark energy model.

Quantum fluctuations remain unstable to linear perturbations.

Abstract

We study the quantum remnant of a scalar field protected by the uncertainty principle. The quantum remnant that survived the later stage of evolution of the universe may provide dark energy and dark matter depending on the potential. Though the quantum remnant shares some useful property of complex scalar field (spintessence) dark energy model, % However although it avoids the formation of Q-ball, quantum fluctuations are still unstable to the linear perturbations for $V \sim \phi^q$ with $q<1$ as in the spintessence model.