Coherences and the thermodynamic uncertainty relation: Insights from quantum absorption refrigerators.

摘要: The thermodynamic uncertainty relation, originally derived for classical Markov-jump processes, provides a tradeoff relation between precision and dissipation, deepening our understanding of the performance quantum thermal machines. Here, we examine interplay system coherences heat current fluctuations on validity thermodynamics in regime. To achieve statistics, perform full counting statistics simulation Redfield master equation. We focus steady-state absorption refrigerators where nonzero coherence eigenstates can either suppress or enhance cooling power, compared with incoherent limit. In scenario, find enhanced relative noise power (standard deviation over mean) presence coherence, thereby corroborating relation. Our results indicate that necessitate consideration when assessing coherent