标题： 重新审视芝诺悖论：原子与双原子反应中的飞行箭头 显示英文标题

标题： Revisiting Zeno's paradox: Flying arrows for atom-diatom reactions

摘要： 观察原子-双原子反应碰撞中量子Zeno和反Zeno情景的可能性，通过时间依赖波包传播方法，针对两种不同的过程（F+HD和H+O_2）进行了研究。提出了一种新方法，其中研究的存活概率是在系统在时间间隔tau处进行测量后重新定义初始状态时获得的概率。与未受扰系统的实际概率进行比较，揭示了存在一个衰减从初始状态被抑制（量子Zeno效应）或加速（反Zeno效应）的区域。与先前的解释不同，由于时间演化的波包在任何时间都不受影响（“飞行的箭”），当前的方法不需要引入反直觉的阻碍演化（“停止的箭”）来解释结果。相反，系统参考状态的连续更新解决了看似现代版的Zeno悖论。 显示英文摘要

摘要： The possibility to observe quantum Zeno and anti-Zeno scenarios for atom-diatom reactive collisions is investigated for two diferent processes (F+HD and H+O_2) by means of time-dependent wave packet propagations. A novel approach is proposed in which the survival probabilities investigated are those obtained when the initial state is redefined after time intervals tau at which measurements are performed on the system. The comparison with the actual probability for the unperturbed system reveals the existence of a regime in which the decay from the initial state appears to be inhibited (the quantum Zeno effect) or accelerated (the anti-Zeno effect). In contrast with preceding interpretations, given that the time-evolving wave packet is not affected at any time ("flying arrow"), the present procedure does not require to invoke to counterintuitive hindered evolutions ("stopping arrow") to explain the results. On the contrary the consecutive update of the reference state of the system solves the apparent modern version of Zeno's paradox.