2026-04-27T21:43:58Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/636722025-02-13T07:43:29Zcom_10324_1159com_10324_931com_10324_894col_10324_1310

Alonso Izquierdo, Alberto Miguélez Caballero, David Nieto Calzada, Luis Miguel 2023-12-18T10:06:59Z 2023-12-18T10:06:59Z 2024 Chaos, Solitons & Fractals, 2024, vol. 178, 114373 0960-0779 https://uvadoc.uva.es/handle/10324/63672 10.1016/j.chaos.2023.114373 114373 Chaos, Solitons & Fractals 178 Producción Científica 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. Ministerio de Ciencia e Innovación - Unión Europea “NextGenerationEU/PRTR” (PRTRC17.I1) Ministerio de Ciencia e Innovación (projects PID2020-113406GB-I00 and RED2022-134301-T) application/pdf eng Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2023 The Authors Attribution-NonCommercial-NoDerivatives 4.0 Internacional Radiación Física ϕ4 theory Radiation Longitudinal and orthogonal modes Teoría de ϕ4 Radiación Modos longitudinales y ortogonales 2207.03 Física Atómica Wobbling kinks and shape mode interactions in a coupled two-component ϕ4 theory info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0960077923012754?via%3Dihub SI