The energy-frequency diagram of the (1+1)-dimensional $Φ^4$ oscillon
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| author | Alexeeva, N. V. Barashenkov, I. V. Dika, Alain De Sousa, Raphael |
| author_facet | Alexeeva, N. V. Barashenkov, I. V. Dika, Alain De Sousa, Raphael |
| contents | Two different methods are used to study the existence and stability of the (1+1)-dimensional $Φ^4$ oscillon. The variational technique approximates it by a periodic function with a set of adiabatically changing parameters. An alternative approach treats oscillons as standing waves in a finite-size box; these are sought as solutions of a boundary-value problem on a two-dimensional domain. The numerical analysis reveals that the standing wave's energy-frequency diagram is fragmented into disjoint segments with $ω_{n+1} < ω< ω_{n}$, where $ω_n= ω_0/ (n+1)$, $n=0,1,2, ...$, and $ω_0$ is the endpoint of the continuous spectrum (mass threshold of the model). The variational approximation involving the first, zeroth and second harmonic components provides an accurate description of the oscillon with the frequency in $(ω_1, ω_0)$, but breaks down as $ω$ falls out of that interval. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01028 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The energy-frequency diagram of the (1+1)-dimensional $Φ^4$ oscillon Alexeeva, N. V. Barashenkov, I. V. Dika, Alain De Sousa, Raphael High Energy Physics - Theory Pattern Formation and Solitons Two different methods are used to study the existence and stability of the (1+1)-dimensional $Φ^4$ oscillon. The variational technique approximates it by a periodic function with a set of adiabatically changing parameters. An alternative approach treats oscillons as standing waves in a finite-size box; these are sought as solutions of a boundary-value problem on a two-dimensional domain. The numerical analysis reveals that the standing wave's energy-frequency diagram is fragmented into disjoint segments with $ω_{n+1} < ω< ω_{n}$, where $ω_n= ω_0/ (n+1)$, $n=0,1,2, ...$, and $ω_0$ is the endpoint of the continuous spectrum (mass threshold of the model). The variational approximation involving the first, zeroth and second harmonic components provides an accurate description of the oscillon with the frequency in $(ω_1, ω_0)$, but breaks down as $ω$ falls out of that interval. |
| title | The energy-frequency diagram of the (1+1)-dimensional $Φ^4$ oscillon |
| topic | High Energy Physics - Theory Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2404.01028 |