论文标题
混乱协助多体隧道
Chaos assisted many-body tunnelling
论文作者
论文摘要
我们研究了两个弱耦合的玻色 - 约瑟夫森连接处之间的混乱和隧道相互作用。复合系统的经典相空间具有混合结构，包括用于颗粒和激发的准综合自捕捞岛，由混乱的海分开。我们表明，这些岛屿支持的宏观Schrödinger猫州之间的多体动力学隧道差距是混乱的。多体隧道速率在几个数量级上波动，系统参数或粒子数的变化很小。
We study the interplay of chaos and tunnelling between two weakly-coupled Bose-Josephson junctions. The classical phase space of the composite system has a mixed structure including quasi-integrable self-trapping islands for particles and excitations, separated by a chaotic sea. We show that the many-body dynamical tunnelling gap between macroscopic Schrödinger cat states supported by these islands is chaos-enhanced. The many-body tunnelling rate fluctuates over several orders of magnitude with small variations of the system parameters or the particle number.
