Engelhardt G, Bastidas V M, Emary C, Brandes T
Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May;87(5):052110. doi: 10.1103/PhysRevE.87.052110. Epub 2013 May 8.
We establish a set of nonequilibrium quantum phase transitions in the Lipkin-Meshkov-Glick model under monochromatic modulation of the interparticle interaction. We show that the external driving induces a rich phase diagram that characterizes the multistability in the system. Interestingly, the number of stable configurations can be tuned by increasing the amplitude of the driving field. Furthermore, by studying the quantum evolution, we demonstrate that the system exhibits a set of quantum phases that correspond to dynamically stabilized states.
我们在粒子间相互作用的单色调制下，在Lipkin-Meshkov-Glick模型中建立了一组非平衡量子相变。我们表明，外部驱动诱导出一个丰富的相图，该相图表征了系统中的多重稳定性。有趣的是，稳定构型的数量可以通过增加驱动场的幅度来调节。此外，通过研究量子演化，我们证明该系统展现出一组对应于动态稳定状态的量子相。
