论文标题
超对称淬火中的非平衡多体动力学
Nonequilibrium many-body dynamics in supersymmetric quenching
论文作者
论文摘要
我们研究了两个超对称汉密尔顿人之间的超低量子多体系统引起的动力学。可以通过仔细改变外部陷阱的潜力来产生这种淬火，并导致淬火之前和之后的特征偏见几乎相同的情况。我们表明，仅使用有关初始状态的知识来方便地描述起源于此的动力学，并将此见解应用于最初被困在无限盒子电位中的费米金气体的特定示例中。在不同的高阶超对称伴侣电位上，我们观察到生存概率中多体复兴的出现，并表明其中一些在有限温度下是可靠的。这与众所周知的塔尔伯特效应相反，这是淬灭具有二次频谱系统的标准示例。
We study the dynamics induced by quenching an ultracold quantum many-body system between two supersymmetric Hamiltonians. Such a quench can be created by carefully changing the external trapping potential and leads to a situation where the eigenspectra before and after the quench are nearly identical. We show that the dynamics originating from this can be conveniently described using knowledge about the initial state only and apply this insight to the specific example of a fermionic gas that is initially trapped in an infinite box potential. Quenching to different, higher order supersymmetric partners potentials we observe the appearance of many-body revivals in the survival probability and show that some of these are robust at finite temperatures. This is in contrast to the well known Talbot effect, which is the standard example for quenching into a system with a quadratic spectrum.
