Quantum fermion emission from excited kinks
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909816852578304 |
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| author | Alameda-Calvo, Sergio Blanco-Pillado, Jose J. Martín-Caro, Alberto García |
| author_facet | Alameda-Calvo, Sergio Blanco-Pillado, Jose J. Martín-Caro, Alberto García |
| contents | The amplitude of an excited shape mode in a kink is expected to decay with a well-known power law via scalar radiation emission due to the nonlinear self-coupling of the scalar field. In this work we propose an alternative decay mechanism via pair production of fermions in a simple extension of the $ϕ^4$ model in which the scalar field is coupled to a (quantum) fermionic field through a Yukawa-like interaction term. We study the power emitted through fermions as a function of the coupling constant in the semi-classical limit (without backreaction) and compare it to the case of purely scalar radiation emission. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_26501 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum fermion emission from excited kinks Alameda-Calvo, Sergio Blanco-Pillado, Jose J. Martín-Caro, Alberto García High Energy Physics - Theory High Energy Physics - Phenomenology The amplitude of an excited shape mode in a kink is expected to decay with a well-known power law via scalar radiation emission due to the nonlinear self-coupling of the scalar field. In this work we propose an alternative decay mechanism via pair production of fermions in a simple extension of the $ϕ^4$ model in which the scalar field is coupled to a (quantum) fermionic field through a Yukawa-like interaction term. We study the power emitted through fermions as a function of the coupling constant in the semi-classical limit (without backreaction) and compare it to the case of purely scalar radiation emission. |
| title | Quantum fermion emission from excited kinks |
| topic | High Energy Physics - Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.26501 |