An emergent universe supported by a nonlinear sigma model

TL;DR

This paper proposes a novel cosmological model where an emergent universe is supported by a two-component nonlinear sigma model, incorporating inflaton and chiral fields to explain early universe dynamics.

Contribution

It introduces the use of a two-component nonlinear sigma model as a new mechanism for supporting an emergent universe scenario.

Findings

Demonstrates the viability of the nonlinear sigma model in cosmological contexts

Shows the model can sustain an emergent universe without initial singularity

Provides a framework for incorporating inflaton and chiral fields in early universe models

Abstract

We suggest the use of a nonlinear sigma model as the source which supports an emergent universe. The two-component nonlinear sigma model is considered as the simplest model containing inflaton and auxiliary chiral fields.