标题： 膨胀环中的反常卡西米尔效应 显示英文标题

标题： Anomalous Casimir effect in an expanding ring

摘要： 卡西米尔效应是真空量子性质的宏观证据。在一个环上，它会导致真空能量出现有限尺寸修正。在这项工作中，我们展示了当环的半径足够快地增加时，这种真空的能量和压力会获得额外的、显著的修正，这是一个实验上可实现的宇宙膨胀模型。这个效应不同于动态卡西米尔效应：它是共形反常的表现，起源于由于环半径增加而引起的时空曲率。这一反常的动力学卡西米尔效应可以通过增加环大小所需的功来测量，该功随着时间变得非单调。 显示英文摘要

摘要： The Casimir effect is a macroscopic evidence of the quantum nature of the vacuum. On a ring, it leads to a finite size correction to the vacuum energy. In this work, we show that this vacuum's energy and pressure acquire additional, sizable corrections, when the ring's radius is increased fast enough, an experimentally accessible model of an expanding universe. This effect is distinct from the dynamical Casimir effect: it is a manifestation of the conformal anomaly, originating from the spacetime curvature induced by the increase of the ring's radius. This anomalous dynamical Casimir effect is measurable through the work necessary to increase the ring size, which becomes non-monotonous in time.