On the $c^{2}$ term in the holographic formula for dark energy

TL;DR

This paper discusses the variability of the $c^{2}$ term in holographic dark energy models, emphasizing that it should not be assumed constant except when the Ricci scale is used as the infrared cutoff.

Contribution

It challenges the common assumption of a constant $c^{2}$ in holographic dark energy, highlighting conditions where it can vary.

Findings

The $c^{2}$ term generally should not be assumed constant.

The $c^{2}$ term remains constant when the Ricci scale is used as the infrared cutoff.

This insight impacts the modeling of holographic dark energy.

Abstract

It is argued that the $c^{2}$ term that appears in the conventional formula for holographic dark energy should not be assumed constant in general. Notwithstanding, there is at least an exception, namely, when the Ricci scale is chosen as the infrared cutoff length.