Ultracold quantum gases in optical lattices - Structure and excitations beyond the mean-field approximation (C06)

C6项目从理论角度研究具有不同成分(自旋和物种)的超冷量子气体，综合使用精确的数值和解析场理论方法。特别是，我们讨论了高能自由度对通过相界驱动的系统动力学的作用(与C1、C4、B2、B5合作)，考虑到类似于Kondo和RKKY关联的系统关联的时间演化(与C2、C3、B5合作)，亚稳态的长期多粒子衰变(与B3、A1、A2、A3、A5合作)，以及在跨越相边界的双猝灭期间多粒子波函数的退相干(与C1和C4合作)。

Project C6 investigates ultracold quantum gases with different components (spin and species) from a theoretical perspective, using a synthesis of exact numerical and analytical field theoretical approaches. In particular, we address the role of high energy degrees of freedom for the dynamics of systems driven through phase boundaries (collaboration with C1, C4, B2, B5), the time evolution of correlations in systems with different masses of the components in view of the analogy to Kondo- and RKKY-correlations (collaboration with C2, C3, B5), the long-time many-particle decay of meta-stable states (collaboration with B3, A1, A2, A3, A5), and the decoherence of the many-particle wave function during a double-quench across the phase boundary (collaboration with C1 and C4).