First principles cosmology of the Standard Model epoch

TL;DR

This paper constructs a cosmological model from first principles within the Standard Model and General Relativity, describing a universe starting near a classical solution with dark matter as a classical gauge field effect, without additional physics.

Contribution

It presents a novel first-principles cosmology derived solely from the Standard Model and GR, with a specific initial state and dark matter as a classical gauge field effect.

Findings

Homogeneous, isotropic, flat universe from initial conditions

Dark matter emerges as a classical gauge field effect

No free parameters or physics beyond the Standard Model

Abstract

This is a short summary of a project to construct a first principles cosmology of the Standard Model epoch, the period starting shortly before the electro-weak transition. The cosmology is derived from a simple initial state entirely within the SM and General Relativity. The initial state is semi-classical -- concentrated near a classical solution of the SM equations of motion -- and is precisely specified by a few simple conditions. The dark matter is a classical effect, a coherent state of the SU(2)-weak gauge field and the Higgs field. The leading order, classical universe contains only the dark matter. Ordinary matter is a correction due to the fluctuations of the SM fields around the classical trajectory. The initial state produces a homogeneous, isotropic, flat universe. There are no adjustable parameters. No physics beyond the SM is invoked. Only the classical calculations have been done so far. The time evolution of the fluctuations remains to be calculated.