Comparison of the coupled quantum Carnot and Otto cycles

Ferdi Altintas

Physica A: Statistical Mechanics and its Applications, 2019, vol. 523, issue C, 40-47

Abstract: We propose two coupled spins 1/2 interacting via Lipkin–Meshkov–Glick or Heisenberg XXX model as the working substance of either the quantum Carnot engine or the quantum Otto engine cycles. We compare and contrast the performance outputs of the quantum Carnot and Otto cycles under the same condition. The benefit of the use of a coupled quantum working substance on the performance of a quantum heat engine is also revealed. The harvested work in the cycles are found to be remarkably increased by the quantum interaction between the spins. The quantum Carnot cycle produces more work than that of the Otto cycle. On the other hand, when the ratio between the work obtained from the coupled spins and the one from the uncoupled spins is compared, the Otto cycle is found to be more capable than the Carnot cycle to enhance the net work output.

Keywords: Quantum thermodynamics; Quantum heat engine; Quantum Otto cycle; Quantum Carnot cycle (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437119301505
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:523:y:2019:i:c:p:40-47

DOI: 10.1016/j.physa.2019.01.144

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().