Long-lived oscillons from asymmetric bubbles

Details Long-lived oscillons from asymmetric bubbles Long-lived oscillons from asymmetric bubbles

2002-03-07

arxiv.org/abs/hep-th/0203072v3

Phys.Rev. D66 (2002) 085011

Physics

High Energy Physics

High Energy Physics - Theory

RevTeX 4, 9 pages, 11 figures. Revised version with a new approach to stability. Accepted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.66.085011

The possibility that extremely long-lived, time-dependent, and localized field configurations (``oscillons'') arise during the collapse of asymmetrical bubbles in 2+1 dimensional phi^4 models is investigated. It is found that oscillons can develop from a large spectrum of elliptically deformed bubbles. Moreover, we provide numerical evidence that such oscillons are: a) circularly symmetric; and b) linearly stable against small arbitrary radial and angular perturbations. The latter is based on a dynamical approach designed to investigate the stability of nonintegrable time-dependent configurations that is capable of probing slowly-growing instabilities not seen through the usual ``spectral'' method.

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