论文标题
稳态量子通过非谐波振荡器强烈耦合到两个热库
Steady state quantum transport through an anharmonic oscillator strongly coupled to two heat reservoirs
论文作者
论文摘要
我们研究了通过单位玻色式模型模型建模的非谐振荡器的传输特性，并使用基于数值精确的热菲尔德链映射矩阵产品状态（TCMPS）方法耦合到两个不同的热浴。我们比较了TCMP的有效性，无论是与Gorini-Kossakowski-Sudarshan-Lindblad形式中的全局主方程方法与全局主方程方法相关的系统浴耦合，探测强相互作用系统的非平衡动力学。我们讨论了现场相互作用，温度偏差以及系统浴耦合对稳态运输特性的影响。最后，我们还通过研究两个不同初始状态之间痕量距离的时间演变的非单调性，展示了非马克维亚动力学的证据。
We investigate the transport properties of an anharmonic oscillator, modeled by a single-site Bose-Hubbard model, coupled to two different thermal baths using the numerically exact thermofield based chain-mapping matrix product states (TCMPS) approach. We compare the effectiveness of TCMPS to probe the nonequilibrium dynamics of strongly interacting system irrespective of the system-bath coupling against the global master equation approach in Gorini-Kossakowski-Sudarshan-Lindblad form. We discuss the effect of on-site interactions, temperature bias as well as the system-bath couplings on the steady state transport properties. Last we also show evidence of non-Markovian dynamics by studying the non-monotonicity of the time evolution of the trace distance between two different initial states.
