Where galaxies really come from

TL;DR

This paper explores how cosmic inflation, quantum vacuum effects, and particle production mechanisms contribute to galaxy formation, linking theoretical physics with observable cosmic phenomena.

Contribution

It introduces a novel approach involving massive vector boson fields in inflation, highlighting their potential observational signatures and connection to galactic magnetic fields.

Findings

Inflation explains universe uniformity and structure formation.

Massive vector bosons may produce distinct observational signatures.

A model links galaxy formation with standard model particles and magnetic fields.

Abstract

The fundamental paradox of the incompatibility of the observed large-scale uniformity of the Universe with the fact that the age of the Universe is finite is overcome by the introduction of an initial a period of superluminal expansion of space, called cosmic inflation. Inflation can also produce the small deviations from uniformity needed for the formation of structures in the Universe such as galaxies. This is achieved by the conjunction of inflation with the quantum vacuum, through the so-called particle production process. This mechanism is explained and linked with Hawking radiation of black holes. The nature of the particles involved is discussed and the case of using massive vector boson fields instead of scalar fields is presented, with emphasis on its distinct observational signatures. Finally, a particular implementation of these ideas is included, which can link the formation of galaxies, the standard model vector bosons and the observed galactic magnetic fields.