Title: Resolving the critical bubble in SU(8) deconfinement transition Show Chinese title

Title: 解决SU(8)去禁闭相变中的临界泡

Abstract: Strongly coupled confining models with a first order phase transition present an interesting DM candidate. Near the critical temperature these models are strongly non-perturbative, and the critical bubble nucleation rate has so far only been estimated via approximative methods. As a model of a strong first order deconfinement transition, we simulate 4D SU(8) pure gauge model with multicanonical Monte Carlo. We demonstrate that resolving the critical bubble is possible in a strongly coupled model. We calculate the free energy of a critical bubble, which gives a rough upper limit for the nucleation rate. For the parameter points we investigated, the thin-wall approximation for the critial bubble free energy is off by a factor of 2, overestimating the rate at least by a factor of $e^{10}$. Show Chinese abstract

Abstract: 具有一级相变的强耦合限制模型为暗物质候选者提供了一个有趣的例子。 在临界温度附近，这些模型表现出强烈的非微扰性，迄今为止，临界气泡成核率只能通过近似方法进行估计。 作为强一阶禁闭转变的模型，我们对四维 SU(8) 纯规范模型进行了多系综蒙特卡罗模拟。 我们证明在强耦合模型中可以解析临界气泡。 我们计算了临界气泡的自由能，这给出了成核率的一个粗略上限。 对于我们研究的参数点，临界气泡自由能的薄壁近似误差达到两倍，至少高估了成核率的因子为$e^{10}$。