On the thermodynamics of the difference between energy transfer rate and heat engine efficiencyH. Dong, A. Ghosh, M. B. Kim, S.-W. Li, A. A. Svidzinsky, Z. Zhang, G. Kurizki and M. O. ScullyEur. Phys. J. Spec. Top., 230 4 (2021) 867-871DOI: https://doi.org/10.1140/epjs/s11734-021-00091-3