论文标题
耗散两种粒子系统的量子回流
Quantum backflow for dissipative two-identical-particle systems
论文作者
论文摘要
在这项工作中，研究了两个拉伸的高斯波数据包的叠加和两个相同的无旋转粒子的叠加量子回流。回流主要是一个干扰过程，在第一种情况下，耗散无法抑制它。对于两个相同的无旋转粒子，除了干扰术语外，波函数的对称性在该动力学中似乎至关重要。联合性能使玻色子也显示出这种效果，即使对于耗散状态，但对于费米子来说，在任何制度，耗散性和夜无丝质方面都不会表现出回流。相应波函数的抗对称特征似乎足够强以防止它。对于玻色子，还根据一个粒子状态的忠诚度分析了回流，这是两个量子状态的众所周知的特性。在很小的忠诚度值下，即使对于玻色子，也看不到这种效果。
In this work, dissipative quantum backflow is studied for a superposition of two stretched Gaussian wave packets and two identical spinless particles within the Caldirola-Kanai framework. Backflow is mainly an interference process and dissipation is not able to suppress it in the first case. For two identical spinless particles, apart from interference terms, the symmetry of the wave function seems to be crucial in this dynamics. The combined properties make bosons display this effect, even for the dissipative regime but, for fermions, backflow is not exhibited in any regime, dissipative and nodissipative. The anti-symmetric character of the corresponding wave function seems to be strong enough to prevent it. For bosons, backflow is also analyzed in terms of fidelity of one-particle states which is a well-known property of two quantum states. At very small values of fidelity, this effect is not seen even for bosons.
