Weak Interaction and Cosmology

TL;DR

This paper explores the link between the cosmological constant, weak interaction, and neutrino mass, proposing a modified model that aligns neutrino properties with dark energy observations.

Contribution

It revises Hayakawa's ideas by incorporating contemporary physics to estimate neutrino mass and electroweak parameters from cosmological considerations.

Findings

Neutrino mass compatible with dark energy observations

Estimated electroweak mixing angle from neutrino interactions

Alternative neutrino mass evaluation method

Abstract

In this paper we examine the connection among the themes: the cosmological constant, the weak interaction and the neutrino mass. Our main propose is to review and modify the ideas first proposed by Hayakawa [ Prog. Theor. Phys.Suppl.,532(1965).], in the light of the new-fashioned features of contemporary physics. Assuming the pressure of a Fermi gas of neutrinos should be balanced by its gravitational attraction, we evaluate the mass of the background neutrino and its number.The neutrino mass here evaluated is compatible with the known value for the cosmological constant (or dark energy).Taking in account the role played by the weak forces experimented by the neutrinos, we also determined a value for the electroweak mixing angle. For sake of comparison, an alternative evaluation of the neutrino mass is also done.