Staccato radiation from the decay of large amplitude oscillons

TL;DR

This paper investigates how large amplitude oscillons in a deformed sine-Gordon model decay through staggered bursts of radiation, revealing a potentially universal mechanism applicable to various physical systems.

Contribution

It uncovers a novel decay process involving staccato radiation bursts in oscillons, suggesting similar phenomena occur across different models like the $$6 model.

Findings

Decay occurs via staggered transitions with harmonic radiation bursts

Higher harmonics are released as short, intense radiation bursts

The mechanism is likely universal across similar physical models

Abstract

We study the decay of large amplitude, almost periodic breather-like states in a deformed sine-Gordon model in one spatial dimension. We discover that these objects decay in a staggered fashion via a series of transitions, during which higher harmonics are released as short, staccato bursts of radiation. Further, we argue that this phenomenon is not restricted to one particular model, and that similar mechanisms of radiative decay of long-lived oscillating states can be observed for a wide class of physical systems, including the $\phi^6$ model.