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arXiv 1608.05965cond-mat.stat-mech
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用哈密顿框架计算热的瞬态交换涨落定理:经典和量子

Transient exchange fluctuation theorems for heat using Hamiltonian framework: Classical and Quantum

P. S. Pal, Sourabh Lahiri, A. M. Jayannavar

摘要:

研究了有限系统与储层耦合时热交换的统计特性。我们得到了热涨落定理在瞬态区域考虑的组合系统的哈密顿动力学的感兴趣的系统和热浴(S)的解析结果。感兴趣的系统由外部协议驱动。我们首先推导出它在一个单一的热浴的背景下。所得结果与已知结果完全一致。然后我们将治疗推广到两个热浴。我们进一步扩展的研究,量子系统,并表明类似的经典情况下,在量子制度的关系。在我们的研究中,我们调用冯诺依曼两点投影测量在量子力学在瞬态制度。我们的结果是Jarzynski-W $\grave{o}$ jcik热涨落定理的推广。

英文摘要:

We investigate the statistics of heat exchange between a finite system coupled to reservoir(s). We have obtained analytical results for heat fluctuation theorem in the transient regime considering the Hamiltonian dynamics of the composite system consisting of the system of interest and the heat bath(s). The system of interest is driven by an external protocol. We first derive it in the context of a single heat bath. The result is in exact agreement with known result. We then generalize the treatment to two heat baths. We further extend the study to quantum systems and show that relations similar to the classical case hold in the quantum regime. For our study we invoke von Neumann two point projective measurement in quantum mechanics in the transient regime. Our result is a generalisation of Jarzynski-W$\grave{o}$jcik heat fluctuation theorem.

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