论文标题
二维疾病中的相互作用的玻色网冷凝物的相干反向散射的反转：一种截短的Wigner方法
Inversion of coherent backscattering with interacting Bose-Einstein condensates in two-dimensional disorder : a Truncated Wigner approach
论文作者
论文摘要
从理论上讲，我们按照原子激光的原理研究了二维疾病潜力中相互作用的玻色子凝结物的传播。时间转移的散射路径之间的建设性干扰会导致相干的反向散射，这可以观察到以疾病平均的角反向散射电流的锋利锥形式观察到。正如Gross-Pitaevskii方程的数值整合所发现的那样，当存在非变化的相互作用强度时，这种相干的反向散射锥被反向，表明从建设性到破坏性干扰的交叉。基于截短的Wigner方法的数值模拟使人们可以超越均值场方法，并表明，随着相互作用强度的增加，并且在远离平均电场限制的参数中，倾斜的抗钙化标志隐藏在无结构和主导的不相互贡献后面。然而，尽管有部分地位，但我们观察到，这种弱的抗钙化场景占据了有限的相互作用强度，为使用$^{87} $ rb原子进行实验性观察开辟了道路。
We theoretically study the propagation of an interacting Bose-Einstein condensate in a two-dimensional disorder potential, following the principle of an atom laser. The constructive interference between time-reversed scattering paths gives rise to coherent backscattering, which may be observed under the form of a sharp cone in the disorder-averaged angular backscattered current. As is found by the numerical integration of the Gross-Pitaevskii equation, this coherent backscattering cone is inversed when a non-vanishing interaction strength is present, indicating a crossover from constructive to destructive interferences. Numerical simulations based on the Truncated Wigner method allow one to go beyond the mean-field approach and show that dephasing renders this signature of antilocalisation hidden behind a structureless and dominant incoherent contribution as the interaction strength is increased and the injected density decreased, in a regime of parameters far away from the mean-field limit. However, despite a partial dephasing, we observe that this weak antilocalisation scenario prevails for finite interaction strengths, opening the way for an experimental observation with $^{87}$Rb atoms.
