Correlation-enhanced Stability of Microscopic Cyclic Heat Engines
- URL: http://arxiv.org/abs/2111.09508v2
- Date: Thu, 4 Aug 2022 08:43:33 GMT
- Title: Correlation-enhanced Stability of Microscopic Cyclic Heat Engines
- Authors: Guo-Hua Xu, Gentaro Watanabe
- Abstract summary: tuning the driving protocol appropriately, we can get the negative intercycle correlation to reduce the fluctuation of work through multiple cycles.
We demonstrate that the enhancement can be readily realized in the current experiments for a wide range of protocols.
- Score: 0.913755431537592
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: For cyclic heat engines operating in a finite cycle period, thermodynamic
quantities have intercycle and intracycle correlations. By tuning the driving
protocol appropriately, we can get the negative intercycle correlation to
reduce the fluctuation of work through multiple cycles, which leads to the
enhanced stability compared to the single-cycle operation. Taking the Otto
engine with an overdamped Brownian particle as a working substance, we identify
a scenario to get such enhanced stability by the intercycle correlation.
Furthermore, we demonstrate that the enhancement can be readily realized in the
current experiments for a wide range of protocols. By tuning the parameters
within the experimentally achievable range, the uncertainty of work can be
reduced to below $\sim 50 \%$.
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