论文标题
量子系统中的熵和信息流与浴室紧密耦合
Entropy and information flow in quantum systems strongly coupled to baths
论文作者
论文摘要
考虑到von Neumann的表达降低密度基质作为与浴室紧密耦合的系统的热力学熵，我们使用非平衡的绿色功能（NEGF）技术来得出浴室和能量分辨的表达式，用于熵，熵产生和信息流。考虑因素与动态（量子传输）描述和表达式一致，而表达式在限制耦合或稳态的限制案例中减少了预期形式。仅根据系统度自由而言，对于开放非平衡量子系统的热力学特性，流量的表达很方便。我们将标准NEGF用于非相互作用系统中的派生，Hubbard negf用于交互系统。理论推导通过通用连接模型中的数值模拟说明。
Considering von Neumann expression for reduced density matrix as thermodynamic entropy of a system strongly coupled to baths, we use nonequilibrium Green's function (NEGF) techniques to derive bath and energy resolved expressions for entropy, entropy production, and information flows. The consideration is consistent with dynamic (quantum transport) description and expressions reduce to expected forms in limiting cases of weak coupling or steady-state. Formulation of the flows in terms of only system degrees freedom is convenient for simulation of thermodynamic characteristics of open nonequilibrium quantum systems. We utilize standard NEGF for derivations in noninteracting systems, Hubbard NEGF is used for interacting systems. Theoretical derivations are illustrated with numerical simulations within generic junction models.
