Decay of Kaluza-Klein Vacuum via Singular Instanton
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917646845345792 |
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| author | Ookouchi, Yutaka Sato, Ryota Tsukahara, Sohei |
| author_facet | Ookouchi, Yutaka Sato, Ryota Tsukahara, Sohei |
| contents | In the decay process of metastable vacua in quantum field theories, the bounce solution, a classical solution in Euclideanized theories, is helpful in calculating the decay rate. Recently, the bounce solution with a conical singularity has attracted wide attention and revealed physical importance. In this paper, we discuss the bubble of nothing solution, which describes the decay process of a five-dimensional Kaluza-Klein vacuum, and study the consequence of including conical singularity. We found that the bounce solution with singularities has a higher decay rate than those without. This effect suggests that a singular solution can play a dominant role in vacuum decay of theories with compact internal space. We also discuss the enhanced decay rate from a thermodynamic perspective. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13917 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Decay of Kaluza-Klein Vacuum via Singular Instanton Ookouchi, Yutaka Sato, Ryota Tsukahara, Sohei High Energy Physics - Theory In the decay process of metastable vacua in quantum field theories, the bounce solution, a classical solution in Euclideanized theories, is helpful in calculating the decay rate. Recently, the bounce solution with a conical singularity has attracted wide attention and revealed physical importance. In this paper, we discuss the bubble of nothing solution, which describes the decay process of a five-dimensional Kaluza-Klein vacuum, and study the consequence of including conical singularity. We found that the bounce solution with singularities has a higher decay rate than those without. This effect suggests that a singular solution can play a dominant role in vacuum decay of theories with compact internal space. We also discuss the enhanced decay rate from a thermodynamic perspective. |
| title | Decay of Kaluza-Klein Vacuum via Singular Instanton |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2404.13917 |