论文标题
4D欧几里得晶格的Sphaleron速率
The Sphaleron Rate from 4D Euclidean Lattices
论文作者
论文摘要
我们开发了一种新的方法来确定热激活速率，例如使用4维欧几里得方法，例如气泡成核，拓扑变化，\ textsl {etc。}。这允许对晶格进行非扰动研究。然后，我们在温度为1.3 $ \ tc $和1000 $ t_ \ mathrm {c} $的温度下研究纯glue QCD中的强Sphaleron速率，与先前的结果接触，但将其延伸到临界温度附近。完整QCD的扩展名很简单。还讨论了提案的局限性（无法计算某个动力学的预因子，令人困惑的大批量行为以及无法治疗温度$ t <1.3 \，t_ \ mathrm {c} $）的局限性。
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.
