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Physical limitations of work extraction from temporal correlations
Elan Stopnitzky1, Susanne Still1,2, Thomas E Ouldridge3
1Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA.
Physical Review. E
|May 22, 2019
Summary
Extracting work from heat requires time-continuous dynamics, which limits efficiency. Applying an external time-varying protocol overcomes these limitations, enabling active driving for enhanced performance in information-exploiting systems.
Area of Science:
- Thermodynamics
- Information Theory
- Statistical Mechanics
Background:
- Information-exploiting systems can extract work from a single heat bath using temporal correlations.
- Physically realizable systems require time-continuous dynamics, posing constraints on device design and efficiency.
Purpose of the Study:
- To investigate the constraints imposed by time-continuous dynamics on information-exploiting systems.
- To identify methods for circumventing efficiency limitations in such systems.
Main Methods:
- Analysis of information-exploiting systems with enforced time-continuous dynamics.
- Theoretical modeling of actively driven systems using external time-varying protocols.
Main Results:
- Time-continuous dynamics significantly constrains system design and diminishes efficiency.
- An external, time-varying protocol can overcome these limitations.
Conclusions:
- Transitioning from passive to actively driven systems is crucial for efficient work extraction.
- External protocols offer a viable solution to enhance the performance of information-exploiting thermodynamic devices.
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