AI 中文总结
研究二维活性布朗粒子晶体中单空位跳跃，发现活性驱动下跳跃率不由自由粒子有效噪声幅度决定，被动极限下有阿累尼乌斯趋势，有效噪声依赖活性分数，揭示了活性晶体中有效温度描述对微观缺陷介导输运的失效。
AI 中文摘要
我们研究了具有单个空位的二维活性布朗粒子晶体中的空位介导跳跃。在活性驱动下，跳跃率并非仅由自由粒子有效噪声幅度决定。相比之下，在被动极限下，跳跃率相对于平移扩散系数呈现类似阿累尼乌斯的激活趋势。有效噪声比较显示出对活性分数的系统依赖性，表明热涨落和持续活性涨落的成分会影响跳跃动力学。这些结果表明活性晶体中微观缺陷介导输运的有效温度描述失效。
英文摘要
We study vacancy-mediated hopping in a two-dimensional active Brownian-particle crystal with a single vacancy. Under active driving, the hopping rates are not organized by the free-particle effective noise amplitude alone. In contrast, in the passive limit, the hopping rate follows an Arrhenius-like activated trend with respect to the translational diffusion coefficient. Effective-noise comparisons show systematic dependence on the active fraction, indicating that the composition of thermal and persistent active fluctuations affects the hopping kinetics. These results demonstrate a breakdown of an effective-temperature description for microscopic defect-mediated transport in an active crystal.
Comments8 pages, 3 figures. Accepted for publication in Journal of the Physical Society of Japan
Journal refJ. Phys. Soc. Jpn. 95, 083003 (2026)
