论文标题
谐波捕获的质量受损费米子的突然淬灭
Sudden quench of harmonically trapped mass-imbalanced fermions
论文作者
论文摘要
研究了突然相互作用淬灭后，两组分数质量生效的少数特性系统的动力学特性。假定最初该系统是在非相互作用的基态制备的，然后在突然的相互作用淬灭之后，单一进化是通过相互作用的多体汉密尔顿人来控制的。通过仔细分析Loschmidt Echo的演变，组件的密度分布以及它们之间的纠缠熵，研究了质量不平衡和粒子数量不平衡对系统进化稳定性的作用。所研究的所有数量都表现出对给定淬火强度下每个组件中重量和较轻的费米的数量的巨大依赖。结果可能对即将进行的实验具有对纤维基因混合物的实验，并定义了少量粒子。
Dynamical properties of two-component mass-imbalanced few-fermion systems confined in a one-dimensional harmonic trap following a sudden quench of interactions are studied. It is assumed that initially the system is prepared in the non-interacting ground state and then, after a sudden quench of interactions, the unitary evolution is governed by interacting many-body Hamiltonian. By careful analysis of the evolution of the Loschmidt echo, density distributions of the components, and entanglement entropy between them, the role of mass imbalance and particle number imbalance on the system's evolution stability are investigated. All the quantities studied manifest a dramatic dependence on the number of heavy and lighter fermions in each component at a given quench strength. The results may have implications for upcoming experiments on fermionic mixtures with a well-defined and small number of particles.
