论文标题
在定期驱动的系统中,时间对称破坏引起的辐射冷却
Radiative cooling induced by time-symmetry breaking in periodically-driven systems
论文作者
论文摘要
从理论上讲,我们研究了在振荡外场的作用下多体系统的热弛豫。当磁场的大小或方向调制围绕成对热交换电导的值,而在调制周期内温度的演变中,时间对称性损坏了时间对称性。我们预测,这种不对称性可以泵送热量,该热量可用于更快地冷却系统。在振荡磁场的作用下,通过不同的磁光系统说明了这种效果。
We theoretically study the thermal relaxation of many-body systems under the action of oscillating external fields. When the magnitude or the orientation of a field is modulated around values where the pairwise heat-exchange conductances depend non-linearly on this field, we demonstrate that the time symmetry is broken during the evolution of temperatures over a modulation cycle. We predict that this asymmetry enables a pumping of heat which can be used to cool down faster the system. This effect is illustrated through different magneto-optical systems under the action of an oscillating magnetic field.