The Sphaleron Rate from 4D Euclidean Lattices
| Autor: | Mancha, Marc Barroso, Moore, Guy D. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | JHEP 01 (2023) 155 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP01(2023)155 |
| Popis: | We develop a new method to determine thermal activation rates, such as for bubble nucleation, topology change, \textsl{etc.}, using 4-dimensional Euclidean methods. This allows nonperturbative study on the lattice. We then investigate the strong sphaleron rate in pure-glue QCD at temperatures between 1.3 $\Tc$ and 1000 $T_\mathrm{c}$, making contact with previous results but extending them down close to the critical temperature. The extension to full QCD will be straightforward. Limitations of the proposal (the inability to compute a certain dynamical prefactor, puzzling large-volume behavior, and the inability to treat temperatures $T < 1.3 \, T_\mathrm{c}$) are also discussed. Comment: 32 pages, 14 figures, 2 tables. Updated to JHEP version |
| Databáze: | arXiv |
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