Concatenation of Scales Below 1 eV

TL;DR

This paper explores potential connections among four fundamental physical and cosmological parameters—neutrino mass, chemical potential, cosmological constant, and extra dimensions—each below 1 eV, suggesting possible underlying relationships.

Contribution

It proposes a conceptual framework linking four key parameters below 1 eV, highlighting potential unified explanations in fundamental physics and cosmology.

Findings

Identifies four parameters clustering below 1 eV

Suggests possible theoretical connections among these parameters

Provides a basis for future unified models

Abstract

There are (at least) four numbers of physical and cosmological significance whose inferred values, when expressed in mass units, cluster in a window below 1 eV. These are: the neutrino mass, the neutrino chemical potential, the cosmological constant, and the size of two extra dimensions (if the fundamental scale of gravity is 1-10 TeV). In this note, we imagine ways in which these four numbers could all be connected.