Dark spinor inflation -- theory primer and dynamics

TL;DR

This paper explores inflation driven by dark spinor fields, deriving the relevant cosmological equations, presenting an exactly solvable model, and analyzing quantum fluctuations to compare with scalar field inflation.

Contribution

It introduces the concept of dark spinor fields as an inflationary matter source and provides a detailed theoretical framework and exact solutions.

Findings

Derived cosmological equations for dark spinor inflation

Presented an exactly solvable inflationary model

Calculated the power spectrum of quantum fluctuations and compared with scalar inflation

Abstract

Inflation driven by a single dark spinor field is discussed. We define the notion of a dark spinor field and derive the cosmological field equations for such a matter source. The conditions for inflation are determined and an exactly solvable model is presented. We find the power spectrum of the quantum fluctuation of this field and compare the results with scalar field inflation.