Analytic description of monodromy oscillons

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 met...

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Bibliographic Details
Published in:arXiv.org 2023-08
Main Authors: Levkov, D G, Maslov, V E
Format: Article
Language:English
Subjects:
Anharmonicity
Mathematical models
Oscillons
Scalars
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2306.06171