Vacuum Energy and Standard Model Physics

TL;DR

This paper investigates the conditions under which vacuum energy contributions from Standard Model fields can cancel, revealing that additional massive fermions are necessary and compatible with current Higgs mass bounds.

Contribution

It demonstrates that vacuum energy cancellation requires introducing at least one massive fermion with specific mass ranges, extending the Standard Model.

Findings

Cancellation of vacuum energy contributions is impossible without massive fermions.

The lightest boson mass range aligns with current Higgs bounds.

Additional fermions are essential for vacuum energy cancellation.

Abstract

The conditions for the cancellation of one loop contributions to vacuum energy (both U.V. divergent and finite) coming from the Standard Model (SM) fields are examined. It is proven that this is not possible unless one introduces besides several bosons, at least one massive fermion having mass within specific ranges. On examining one of the simplest SM extensions satisfying the constraints one finds that the mass range of the lightest massive boson is compatible with the present Higgs mass bounds. We do not consider effects associated with condensates or renormalization group running.