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International Conference "Fields & Strings 2024"
February 7, 2024 16:30–17:00, Moscow, Steklov Mathematical Institute
 


Oscillons in weakly nonlinear scalar models

V. E. Maslov

Institute for Nuclear Research, Russian Academy of Sciences, Moscow
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V. E. Maslov
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Abstract: 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".

Language: English
 
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