Zhang X Z, Lin S, Song Z
School of Physics, Nankai University, Tianjin 300071, China.
College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China.
Sci Rep. 2016 Jun 2;6:27189. doi: 10.1038/srep27189.
Short-range interaction can give rise to particle pairing with a short-range correlation, which may be destroyed in the presence of an external field. We study the transition between correlated and uncorrelated particle states in the framework of one- dimensional Hubbard model driven by a field. We show that the long time-scale transfer rate from an initial correlated state to final uncorrelated particle states is sensitive to the quench field strength and exhibits a periodic behavior. This process involves an irreversible energy transfer from the field to particles, leading to a quantum electrothermal effect.
短程相互作用会导致粒子配对并产生短程关联,而在外部场存在的情况下这种关联可能会被破坏。我们在由场驱动的一维哈伯德模型框架内研究相关粒子态与非相关粒子态之间的转变。我们表明,从初始相关态到最终非相关粒子态的长时间尺度转移速率对猝灭场强敏感,并呈现出周期性行为。这个过程涉及从场到粒子的不可逆能量转移,从而导致量子电热效应。