既不拉也不推：遗传漂变和前沿漂移揭示了一类新的反应扩散波
Neither pulled nor pushed: Genetic drift and front wandering uncover a new class of reaction-diffusion waves
摘要：
行波描述了从物理学中的晶体生长到生物学中的范围扩展的各种自然现象。存在两类性质非常不同的波：拉和推。拉波是由扩张边缘的高增长率驱动的，那里的生物数量很小，波动很大。与此相反，波动被抑制在推波，因为该地区的最大增长转向人口的散装。虽然人们普遍认为，膨胀要么拉或推，我们发现了一个中间类的波与批量驱动的增长，但非常大的波动。这些波是不寻常的，因为它们的性质是由前缘和前缘的大部分控制的。
英文摘要：
Traveling waves describe diverse natural phenomena from crystal growth in physics to range expansions in biology. Two classes of waves exist with very different properties: pulled and pushed. Pulled waves are driven by high growth rates at the expansion edge, where the number of organisms is small and fluctuations are large. In contrast, fluctuations are suppressed in pushed waves because the region of maximal growth is shifted towards the population bulk. Although it is commonly believed that expansions are either pulled or pushed, we found an intermediate class of waves with bulk-driven growth, but exceedingly large fluctuations. These waves are unusual because their properties are controlled by both the leading edge and the bulk of the front.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
