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Quantum Otto engine working with interacting spin systems: Finite power performance in stochastic thermodynamics
- Source :
- Physical review. E. 102(2-1)
- Publication Year :
- 2020
-
Abstract
- A quantum Otto engine using two-interacting spins as its working medium is analyzed within framework of stochastic thermodynamics. The time-dependent power fluctuations and average power are explicitly derived for a complete cycle of engine operation. We find that the efficiency and power fluctuations are affected significantly by interparticle interactions, but both of them become interaction-independent under maximal power via optimizing the external control parameter. The behavior of the efficiency at maximum power is further explained by analyzing the optimal protocol of the engine.
Details
- ISSN :
- 24700053
- Volume :
- 102
- Issue :
- 2-1
- Database :
- OpenAIRE
- Journal :
- Physical review. E
- Accession number :
- edsair.doi.dedup.....ecde5bb13247ea2198a9983ec64cebff