We study the ground state properties and nonequilibrium dynamics of two spinor bosonic impurities immersed in a one-dimensional bosonic gas upon applying an interspecies interaction quench. For the ground state of two non-interacting impurities we reveal signatures of attractive induced interactions in both cases of attractive or repulsive interspecies interactions, while a weak impurity-impurity repulsion forces the impurities to stay apart. Turning to the quench dynamics we inspect the time-evolution of the contrast unveiling the existence, dynamical deformation and the orthogonality catastrophe of Bose polarons. We find that for an increasing postquench repulsion the impurities reside in a superposition of two distinct two-body configurations while at strong repulsions their corresponding two-body correlation patterns show a spatially delocalized behavior evincing the involvement of higher excited states. For attractive interspecies couplings, the impurities exhibit a tendency to localize at the origin and remarkably for strong attractions they experience a mutual attraction on the two-body level that is imprinted as a density hump on the bosonic bath.

中文翻译：

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玻色极化子的多体量子动力学和诱导相关性

我们研究了两种自旋玻色子杂质在应用种间相互作用淬火后浸入一维玻色子气体中的基态特性和非平衡动力学。对于两种非相互作用杂质的基态，我们揭示了在吸引或排斥种间相互作用的两种情况下吸引诱导相互作用的特征，而弱的杂质 - 杂质排斥力迫使杂质分开。转向猝灭动力学，我们检查了对比的时间演化，揭示了玻色极化子的存在、动力学变形和正交性灾难。我们发现，对于增加的淬火后斥力，杂质存在于两种不同的双体配置的叠加中，而在强斥力下，它们相应的双体相关模式显示出空间离域行为，表明涉及更高的激发态。对于有吸引力的种间耦合，杂质表现出定位在原点的趋势，并且显着地对于强吸引力，它们在二体水平上经历相互吸引，在玻色浴上以密度驼峰的形式印记。