2019
DOI: 10.1142/s0217732319500597
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Specific heat and thermal entanglement in an open quantum system

Abstract: In this brief report, we attention to the system of two qubits modeled by Heisenberg XXZ chain with the Dzyaloshinskii-Moriya interaction. The system exposed to bosonic baths with the Cauchy-Lorentz distribution of frequency. We've got a new formula to calculate the specific heat of open systems using density and found that the specific heat at low temperatures can be negative. We observed that when the state of system is entangle, in contradiction with the third law of thermodynamics, the specific heat is div… Show more

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Cited by 3 publications
(1 citation statement)
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References 32 publications
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“…This implies that the present W-Class tetrapartite system is more robust than that of the GHZ tetrapartite system since r W−Class ≈ 0.472473 > r GHZ ≈ 0.417. Finally, it should be mentioned that we are going to see whether or how the present study extends to the thermodynamic properties as treated in [64,65].…”
Section: Discussion and Concluding Remarksmentioning
confidence: 95%
“…This implies that the present W-Class tetrapartite system is more robust than that of the GHZ tetrapartite system since r W−Class ≈ 0.472473 > r GHZ ≈ 0.417. Finally, it should be mentioned that we are going to see whether or how the present study extends to the thermodynamic properties as treated in [64,65].…”
Section: Discussion and Concluding Remarksmentioning
confidence: 95%