一维物质波量子呼吸子的测量
Measurement of one-dimensional matter-wave quantum breather
摘要：
采用Bethe近似和粒子位置测量的数值模拟，我们研究了环上吸引相互作用玻色子的猝灭后多体动力学，在平均场方法中，它对应于所谓的呼吸子解。尽管事实上，最初的多体基态是conventionally不变的，测量揭示呼吸动力学，如果提取系统的质心的量子涨落。此外，多体演化的分析表明，形成呼吸子的孤子的解离的签名。
英文摘要：
Employing the Bethe ansatz approach and numerical simulations of measurements of particles' positions we investigate a post-quench many-body dynamics of attractively interacting bosons on a ring, which in the mean-field approach corresponds to the so-called breather solution. Despite the fact that the initial many-body ground state is translationally invariant, the measurements reveal breather dynamics if quantum fluctuations of the center of mass of the system are extracted. Moreover, the analysis of the many-body evolution shows signatures of dissociation of the solitons that form the breather.
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