A Minimal Explanation of the Primordial Cosmological Perturbations

TL;DR

This paper proposes a minimal explanation for primordial cosmological perturbations by introducing dimension zero fields that cancel vacuum energy and anomalies, linking particle physics to early universe structure formation.

Contribution

It introduces dimension zero fields as a minimal addition to the Standard Model that explains primordial perturbations without new particles, aligning with observations.

Findings

Primordial perturbations are seeded by quantum fluctuations of dimension zero fields.

Calculated amplitude matches observed values without free parameters.

The model links particle physics properties to cosmological observations.

Abstract

We outline a new explanation for the primordial density perturbations in cosmology. Dimension zero fields are a minimal addition to the Standard Model of particle physics: if the Higgs doublet is emergent, they cancel the vacuum energy and both Weyl anomalies without introducing any new particles. Furthermore, the cancellation explains why there are three generations of elementary particles, including RH neutrinos. We show how quantum zero point fluctuations of dimension zero fields seed nearly scale-invariant, Gaussian, adiabatic density perturbations. We calculate the amplitude of the primordial perturbations in terms of Standard Model couplings and find a result consistent with large scale observations. Subject to two key theoretical assumptions, both the amplitude and the tilt we calculate agree with the observed values, with no free parameters.