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We investigate the longevity of oscillons numerically, paying particularattention to radially-symmetric oscillons that have been conjectured to have aninfinitely-long lifetime. In two spatial dimensions, oscillons have not beenseen to decay. In three spatial dimensions, specific initial Gaussianconfigurations seem to lead to oscillons with spikes in lifetime that have beenconjectured to be infinite. We study such ``resonant'' oscillons in two andthree spatial dimensions, applying two tests to study their longevity:parametric resonance and virialization. Without offering a formal proof, ournumerical results, within their precision, offer support for the conjecturethat, in both dimensions, resonant oscillons may be infinitely long-lived.

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