Dual axion-like field inflation

Abstract

Cosmic inflation is one of the most important paradigms in modern cosmology. In its simplest form, inflation is driven by a single inflaton field. However, multi-field inflation has become increasingly attractive because it can solve many theoretical and observational challenges. In this paper, we propose a particular model involving two axion-like fields with simply monodromy-dominated potentials. We demonstrate that this model is consistent with current cosmological observations.

Comments: 5 pages, 7 figures. A minimalistic model: tachyonic mass terms plus a biquadratic coupling yield a flat landscape