论文标题
多体量子回旋镖效应
Many-body quantum boomerang effect
论文作者
论文摘要
我们以数值研究多体相互作用对量子回旋镖效应的影响。我们考虑各种情况：弱相互作用的玻色子，tonks-girardeau气体和强烈相互作用的玻色子（可以映射到弱相互作用的费米子上）。使用时间不断变化的块分解算法进行数值模拟，这是一种基于矩阵乘积状态的准表演方法。在弱相互作用的玻色子的情况下，我们发现量子回旋镖效应的部分破坏与较早的平均场研究[Phys。修订版A \ textbf {102}，013303（2020）]。对于Tonks-Girardeau气体，我们显示了全量子回旋镖效应的存在。对于强烈相互作用的玻色子，我们观察到部分飞旋镖效应。我们表明，量子回旋镖效应的破坏是通用的，不取决于粒子之间相互作用的细节。
We study numerically the impact of many-body interactions on the quantum boomerang effect. We consider various cases: weakly interacting bosons, the Tonks-Girardeau gas, and strongly interacting bosons (which may be mapped onto weakly interacting fermions). Numerical simulations are performed using the time-evolving block decimation algorithm, a quasi-exact method based on matrix product states. In the case of weakly interacting bosons, we find a partial destruction of the quantum boomerang effect, in agreement with the earlier mean-field study [Phys. Rev. A \textbf{102}, 013303 (2020)]. For the Tonks-Girardeau gas, we show the presence of the full quantum boomerang effect. For strongly interacting bosons, we observe a partial boomerang effect. We show that the destruction of the quantum boomerang effect is universal and does not depend on the details of the interaction between particles.
