Institute for Theoretical Physics, University of Innsbruck, Technikerstraße 21a, A-6020 Innsbruck, Austria.
Group of Applied Physics, University of Geneva, 1211 Geneva 4, Switzerland.
Phys Rev E. 2016 Apr;93:042135. doi: 10.1103/PhysRevE.93.042135. Epub 2016 Apr 26.
A fundamental connection between thermodynamics and information theory arises from the fact that correlations exhibit an inherent work value. For noninteracting systems this translates to a work cost for establishing correlations. Here we investigate the relationship between work and correlations in the presence of interactions that cannot be controlled or removed. For such naturally coupled systems, which are correlated even in thermal equilibrium, we determine general strategies that can reduce the work cost of correlations, and illustrate these for a selection of exemplary physical systems.
热力学和信息论之间存在着根本的联系，这是因为相关性具有内在的工作价值。对于非相互作用的系统，这意味着建立相关性需要付出一定的代价。在这里，我们研究了在存在无法控制或消除的相互作用的情况下，功和相关性之间的关系。对于这种自然耦合的系统，即使在热平衡中也是相关的，我们确定了可以降低相关性工作成本的一般策略，并为一些典型的物理系统说明了这些策略。
