论文标题
在量规场的存在下，在边界驱动的骨梯中的热，粒子和手性电流
Heat, particle and chiral currents in a boundary driven bosonic ladders in presence of gauge fields
论文作者
论文摘要
量子系统可以进行相变并在不同阶段显示不同的特征。由于基础量子相，相应的运输特性也可能有很大差异。我们研究了在均匀量规场中两足的骨梯的运输行为，该梯形场在没有耗散的情况下众所周知，该阶段具有类似Meissner的相位和涡流相。梯子在不同温度下耦合到骨浴，我们使用非平衡绿色功能方法进行研究。特别是，我们显示了手性电流的存在，以及它如何受到温度偏差和耗散强度的影响。我们还证明，下层和上能带之间的间隙开口会导致调节热量和颗粒通过梯子的传输。我们表明，对于基态处于涡旋阶段的系统参数，系统对外部扰动更为敏感。
Quantum systems can undergo phase transitions and show distinct features in different phases. The corresponding transport properties can also vary significantly due to the underlying quantum phase. We investigate the transport behaviour of a two-legged bosonic ladder in a uniform gauge field, which is known to have a Meissner-like phase and a vortex phase in the absence of dissipation. The ladder is coupled to bosonic baths at different temperatures, and we study it using the non-equilibrium Green's function method. In particular, we show the presence of a chiral current and how it is affected by the temperature bias and the dissipation strength. We also demonstrate that the opening of a gap between the lower and upper energy band results in the possibility of tuning heat and particle transport through the ladder. We show that for system parameters for which the ground state is in a vortex phase, the system is more sensitive to external perturbations.
