A nonperturbative test of nucleation calculations for strong phase transitions

Autor:	Gould, Oliver, Kormu, Anna, Weir, David J.
Rok vydání:	2024
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Lattice High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Nucleation rate computations are of broad importance in particle physics and cosmology. Perturbative calculations are often used to compute the nucleation rate $\Gamma$, 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 $|\log \Gamma|$. Our result motivates further testing of the current nucleation paradigm. Comment: 6 pages, 4 figures plus appendix, v2: fixed typo in tree-level and LPA calculation; conclusions unchanged
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.01876 Zobrazit plný text záznamu View this record from Arxiv