一维双组分原子气体模型的输运性质

Transport properties of the one-dimensional bi-component atomic gas model

一维双组分原子气体模型是研究低维流体输运性质的关键模型之一,在低维输运理论及相关应用研究中发挥着重要且独特的作用.在最近10年间,厦门大学复杂系统研究组围绕该模型对低维输运理论开展了大量攻关研究,给出了热功转换效率达到热力学上限的普适条件,指出微观相互作用是达到热力学不确定性关系上限的必要条件,证明了一维系统中可存在自组织及非平衡态相变,发现耦合输运中可存在与所有热力学力都相反的反向流.本文将对这些突破性进展做一简要介绍.

The one-dimensional bi-component atomic gas model plays a crucial role for developing the low-dimensional transport theory and exploring novel applications.Based on this model,in the last decade,Complex Systems Research Group of Xiamen University have carried out extensive studies and achieved some conceptually new progresses.In particular,conditions under which the heat-to-power conversion may reach the upper bound of thermodynamics are revealed.Also,it is pointed out that the microscopic interaction constitutes a necessary condition for reaching the power-efficiency-constancy trade-off upper bound given by the thermodynamic uncertainty relations.In addition to these findings in the linear response regime,it has also been found that,beyond the linear response regime,self-organization and non-equilibrium phase transition can happen in one dimension,which,interestingly,may result in inverse currents against all the thermodynamic forces in coupled transport.Here,these progresses are briefly reviewed.