标题： 超库仑等离子体中的新兴Berezinskii-Kosterlitz-Thouless去禁闭现象 显示英文标题

标题： Emergent Berezinskii-Kosterlitz-Thouless deconfinement in super-Coulombic plasmas

摘要： 我们研究了二维“超库仑”等离子体的统计力学，即具有长程幂律相互作用且比库仑力更长程的中性等离子体。为此，我们采用了数值精确的大规模蒙特卡罗模拟。与简单的能量-熵论据相反，我们观察到随温度变化的电荷禁闭-去禁闭转变。令人惊讶的是，这一转变属于Berezinskii-Kosterlitz-Thouless (BKT)普适类。我们的结果证实了最近关于介电介质和重整化群计算的预测，这些计算表明在微观上超库仑气体中存在有效的长程库仑相互作用。我们明确展示了这种新的介电屏蔽现象，捕捉到了出现的库仑势及其相关的交叉长度尺度。这是通过利用一种基于新测试电荷的方法来确定有效粒子间相互作用实现的。最后，我们证明了这种库仑效应以及相关的BKT转变在通用的相互作用和密度下普遍发生。 显示英文摘要

摘要： We study the statistical mechanics of two-dimensional "super-Coulombic" plasmas, namely, neutral plasmas with power-law interactions longer-ranged than Coulomb. To that end, we employ numerically exact large-scale Monte Carlo simulations. Contrary to naive energy-entropy arguments, we observe a charge confinement-deconfinement transition as a function of temperature. Remarkably, the transition lies in the Berezinskii-Kosterlitz-Thouless (BKT) universality class. Our results corroborate recent dielectric medium and renormalization group calculations predicting effective long-scale Coulomb interactions in microscopically super-Coulombic gases. We explicitly showcase this novel dielectric screening phenomenon, capturing the emergent Coulomb potential and the associated crossover length scale. This is achieved by utilizing a new test charge based methodology for determining effective inter-particle interactions. Lastly, we show that this Coulomb emergence and the associated BKT transition occur universally across generic interactions and densities.