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ВИДЕОТЕКА |
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Oscillons in weakly nonlinear scalar models V. E. Maslov Institute for Nuclear Research, Russian Academy of Sciences, Moscow |
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Аннотация: In this talk we will develop a precise analytic description of oscillons — long-lived quasiperiodic field lumps — in scalar field theories with nearly quadratic potentials. These oscillons are essentially nonperturbative due to large amplitudes, and they are known to achieve extreme longevities. The proposed method is based on a consistent expansion in both the inverse width of the oscillon and the anharmonicity of the potential at strong fields, which is made accurate by introducing a field-dependent “running mass". Язык доклада: английский |