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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.26070 |
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| _version_ | 1866912984898469888 |
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| author | Bayarsaikhan, Bilguun Evslin, Jarah |
| author_facet | Bayarsaikhan, Bilguun Evslin, Jarah |
| contents | We analytically sum the leading bubble diagrams that contribute to the elastic scattering amplitude of a kink and a meson in the $ϕ^4$ double-well model. We find a single peak, corresponding to the unstable kink state in which the shape mode is excited twice. The peak has the usual Breit-Wigner form, and its imaginary part agrees with the shape mode decay rate found by Manton and Merabet. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_26070 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Resonance in Elastic Kink-Meson Scattering Bayarsaikhan, Bilguun Evslin, Jarah High Energy Physics - Theory We analytically sum the leading bubble diagrams that contribute to the elastic scattering amplitude of a kink and a meson in the $ϕ^4$ double-well model. We find a single peak, corresponding to the unstable kink state in which the shape mode is excited twice. The peak has the usual Breit-Wigner form, and its imaginary part agrees with the shape mode decay rate found by Manton and Merabet. |
| title | A Resonance in Elastic Kink-Meson Scattering |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2603.26070 |