发表机构
Key Laboratory of Particle Physics and Particle Irradiation (MOE), Institute of Frontier and Interdisciplinary Science, Shandong University; School of Physics, Henan Normal University; Institute of Theoretical Physics, Chinese Academy of Sciences（粒子物理与粒子辐照教育部重点实验室，前沿交叉科学研究院，山东大学; 河南师范大学物理学院; 中国科学院理论物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过解析计算与朗之万模拟，发现相邻亚临界气泡的重叠可降低自由能成本并延长其寿命，可能产生集体效应，应纳入动力学描述。
AI 中文摘要
在弱一级相变过程中，亚临界气泡可以形成可观的数量，但通常被视为孤立的涨落。这引出了一个问题：相邻亚临界气泡之间的空间重叠能否改变它们的演化。我们通过将复合高斯轮廓的解析自由能计算与重叠构型的朗之万模拟相结合来解决这个问题。我们发现，重叠降低了自由能成本，并且通常增加了亚临界气泡的寿命，增强的持久性可能反过来影响它们的丰度。因此，这种重叠可以产生集体效应，应被纳入亚临界气泡群体的动力学描述中。
英文摘要
Subcritical bubbles can form an appreciable population during weak first-order phase transitions, but are usually treated as isolated fluctuations. This raises the question of whether spatial overlap between neighboring subcritical bubbles can modify their evolution. We address this question by combining analytic free-energy calculations for composite Gaussian profiles with Langevin simulations of overlapping configurations. We find that the overlap lowers the free-energy cost and generally increases the lifetime of subcritical bubbles, with the enhanced persistence potentially feeding back on their abundance. Such overlap can therefore generate collective effects and should be incorporated into kinetic descriptions of subcritical-bubble populations.
Comments10 pages, 4 figures, Ref updated
