# On the cosmological vacuum and dark energy

## TL;DR

This paper proposes a model of the cosmological vacuum as a degenerate fermionic population, estimating its properties and linking it to dark energy and neutrino mass observations.

## Contribution

It introduces a novel fermionic vacuum model that estimates vacuum particle mass and density consistent with dark energy and neutrino mass data.

## Key findings

- Estimated vacuum particle mass aligns with neutrino mass observations.
- Vacuum number densities exceed relic neutrino densities.
- Model provides a plausible explanation for dark energy density.

## Abstract

A degenerate fermionic vacuum population is suggested. Based on the abundance of the dark energy density in the Universe the vacuum particle mass and number density are estimated. The obtained mass is in reasonable agreement with observations and predictions of the neutrino mass. Number densities are higher than those of the relativistic relic neutrino component.