Efficiency fluctuations in quantum heat engines with non-quasi-static adiabatic strokes
The study analyzed efficiency fluctuations in quantum Carnot and Otto engines using non-quasi-static adiabatic strokes and quasi-static processes. It found that piston speed introduces additional quantum fluctuations, which modify average engine efficiencies, especially when piston size is small or temperature is low. This reveals how quantum effects alter the performance of these engines at mesoscopic scales.