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Título
Wobbling kinks and shape mode interactions in a coupled two-component ϕ4 theory
Año del Documento
2024
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Chaos, Solitons & Fractals, 2024, vol. 178, 114373
Résumé
The dynamics of a wobbling kink in a two-component coupled scalar field theory (with an excited orthogonal shape mode) is addressed. For this purpose, the vibration spectrum of the second order small kink fluctuation is studied in order to find the corresponding vibration modes associated to the first (longitudinal) and second (orthogonal) field components. By means of this analysis, it was found that the number of possible shape modes depends on the value of the coupling constant. It is notable that when one of the orthogonal field shape modes is initially triggered, the unique shape mode of the longitudinal field is also activated. This coupling causes the kink to emit radiation with twice the frequency of excited mode in the first field component. Meanwhile, in the orthogonal channel we find radiation with two different frequencies: one is three times the frequency of the orthogonal wobbling mode and another is the sum of the frequencies of the longitudinal shape mode and the triggered mode. All the analytical results obtained in this study have been successfully contrasted with those obtained through numerical simulations.
Materias (normalizadas)
Radiación
Física
Materias Unesco
2207.03 Física Atómica
Palabras Clave
ϕ4 theory
Radiation
Longitudinal and orthogonal modes
Teoría de ϕ4
Radiación
Modos longitudinales y ortogonales
ISSN
0960-0779
Revisión por pares
SI
Patrocinador
Ministerio de Ciencia e Innovación - Unión Europea “NextGenerationEU/PRTR” (PRTRC17.I1)
Ministerio de Ciencia e Innovación (projects PID2020-113406GB-I00 and RED2022-134301-T)
Ministerio de Ciencia e Innovación (projects PID2020-113406GB-I00 and RED2022-134301-T)
Propietario de los Derechos
© 2023 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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