论文标题
冷自旋1气体中的气泡成核
Bubble nucleation in a cold spin 1 gas
论文作者
论文摘要
冷原子气体提供了模拟实验室早期宇宙物理学的前景。在冷凝水相中，气体由具有高能粒子理论的关键特征的场理论描述。本文描述了一个三级系统，该系统通过气泡的成核进行了一阶相变。理论研究表明，在非零温度下，气泡在二维的二维中成核。从随机的投影大比塔维斯基方程和非扰动激体intanton方法计算出的气泡成核之间是有很好的一致性的。当模拟中包括光盒陷阱时，气泡优先在陷阱的壁上优先核定。
Cold atomic gases offer the prospect of simulating the physics of the very early universe in the laboratory. In the condensate phase, the gas is described by a field theory with key features of high energy particle theory. This paper describes a three level system which undergoes a first order phase transition through the nucleation of bubbles. The theoretical investigation shows bubbles nucleating in two dimensions at non-zero temperature. There is good agreement between the bubble nucleation rates calculated from a Stochastic Projected Gross-Pitaevskii equation and from a non-perturbative instanton method. When an optical box trap is included in the simulations, the bubbles nucleate preferentially near the walls of the trap.
