Oscillons during Dirac-Born-Infeld Preheating

TL;DR

This paper presents the first three-dimensional simulation of oscillon formation during preheating with noncanonical kinetic terms, revealing that such effects significantly influence oscillon dynamics.

Contribution

It introduces the first 3D simulation of oscillon formation during preheating with noncanonical kinetic terms like Dirac-Born-Infeld, highlighting their impact.

Findings

Oscillons can form during preheating with noncanonical kinetic terms.

Noncanonical effects significantly influence oscillon formation.

Simulation results differ from canonical cases, showing unique dynamics.

Abstract

Oscillons are long-lived, localized, oscillating nonlinear excitations of a real scalar field which can be abundantly produced during preheating after inflation. We give the first $(3+1)$-dimensional simulation for the oscillon formation during preheating with noncanonical kinetic terms, e.g. the Dirac-Born-Infeld form, and find that the formation of oscillons is significantly influenced by the noncanonical effect.