A nonperturbative test of nucleation calculations for strong phase transitions
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866915526111920128 |
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| author | Gould, Oliver Kormu, Anna Weir, David J. |
| author_facet | Gould, Oliver Kormu, Anna Weir, David J. |
| contents | Nucleation rate computations are of broad importance in particle physics and cosmology. Perturbative calculations are often used to compute the nucleation rate $Γ$, but these are incomplete. We perform nonperturbative lattice simulations of nucleation in a scalar field theory with a tree-level barrier, computing a final result extrapolated to the thermodynamic and continuum limits. Although the system in question should be well-described by a complete one-loop perturbative calculation, we find only qualitative agreement with the full perturbative result, with a 20% discrepancy in $|\log Γ|$. Our result motivates further testing of the current nucleation paradigm. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01876 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A nonperturbative test of nucleation calculations for strong phase transitions Gould, Oliver Kormu, Anna Weir, David J. High Energy Physics - Theory Cosmology and Nongalactic Astrophysics High Energy Physics - Lattice High Energy Physics - Phenomenology Nucleation rate computations are of broad importance in particle physics and cosmology. Perturbative calculations are often used to compute the nucleation rate $Γ$, but these are incomplete. We perform nonperturbative lattice simulations of nucleation in a scalar field theory with a tree-level barrier, computing a final result extrapolated to the thermodynamic and continuum limits. Although the system in question should be well-described by a complete one-loop perturbative calculation, we find only qualitative agreement with the full perturbative result, with a 20% discrepancy in $|\log Γ|$. Our result motivates further testing of the current nucleation paradigm. |
| title | A nonperturbative test of nucleation calculations for strong phase transitions |
| topic | High Energy Physics - Theory Cosmology and Nongalactic Astrophysics High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2404.01876 |