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Active magneto gyrator as a tunable heat engine or heat pump
F Adersh1, M Muhsin1, M Sahoo1
1University of Kerala, Department of Physics, Kariavattom, Thiruvananthapuram-695581, India.
Physical Review. E
|September 16, 2025
Summary
This study explores an active magneto gyrator, revealing its potential as a heat engine or pump. Its efficiency can reach 100% by adjusting parameters, even in complex media.
Area of Science:
- Thermodynamics
- Statistical Mechanics
- Active Matter Physics
Background:
- Active particles in confined potentials are crucial for understanding biological and artificial systems.
- The interplay of external fields, temperature gradients, and particle activity influences thermodynamic performance.
Purpose of the Study:
- To theoretically investigate the thermodynamic performance of an active magneto gyrator.
- To analyze the impact of magnetic fields and particle activity on heat engine/pump performance.
- To explore efficiency limits and behavior in viscoelastic media.
Main Methods:
- Theoretical investigation of a 2D system with an inertial charged active particle.
- Analysis of particle motion in an asymmetric parabolic potential subjected to heat baths and a magnetic field.
- Examination of two scenarios with opposing and aligned load forces relative to torque.
Main Results:
- The active magneto gyrator can function as a heat engine or pump, with behavior dependent on load force direction and magnitude.
- Activity significantly impacts performance only in the presence of a magnetic field.
- Efficiency can reach 100% without a universal upper bound, tunable via system parameters, and achievable in viscoelastic media.
Conclusions:
- The active magneto gyrator offers tunable thermodynamic performance, exceeding limitations of simpler Brownian systems.
- Its operation as an engine or pump is controllable, with potential for high efficiency in various physical environments.
- The study provides insights into designing active matter systems for energy conversion and transport.
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