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arXiv · 2306.06171

Analytic description of monodromy oscillons

D. G. Levkov·V. E. Maslov
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Abstract

We develop precise analytic description of oscillons - long-lived quasiperiodic field lumps - in scalar field theories with nearly quadratic potentials, e.g. the monodromy potential. Such oscillons are essentially nonperturbative due to large amplitudes, and they achieve extreme longevities. Our method is based on a consistent expansion in the anharmonicity of the potential at strong fields, which is made accurate by introducing a field-dependent "running mass." At every order, we compute effective action for the oscillon profile and other parameters. Comparison with explicit numerical simulations in (3+1)-dimensional monodromy model shows that our method is significantly more precise than other analytic approaches.

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D. G. Levkov, V. E. Maslov. 2023-06-09. Analytic description of monodromy oscillons. https://doi.org/10.1103/physrevd.108.063514

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