# Resonant Configurations in Scalar Field Theories: Can (Some) Oscillons Live Forever?

## TL;DR

This paper numerically investigates the potential for certain oscillons in scalar field theories to have infinite lifetimes, focusing on resonant configurations in two and three dimensions.

## Contribution

It provides numerical evidence supporting the conjecture that resonant oscillons can be infinitely long-lived in both two and three spatial dimensions.

## Key findings

- Resonant oscillons may have infinite lifetimes.
- Oscillons in two dimensions do not decay.
- Specific initial conditions lead to long-lived oscillons.

## Abstract

We investigate the longevity of oscillons numerically, paying particular attention to radially-symmetric oscillons that have been conjectured to have an infinitely-long lifetime. In two spatial dimensions, oscillons have not been seen to decay. In three spatial dimensions, specific initial Gaussian configurations seem to lead to oscillons with spikes in lifetime that have been conjectured to be infinite. We study such ``resonant'' oscillons in two and three spatial dimensions, applying two tests to study their longevity: parametric resonance and virialization. Without offering a formal proof, our numerical results, within their precision, offer support for the conjecture that, in both dimensions, resonant oscillons may be infinitely long-lived.