Journal
PHYSICAL REVIEW A
Volume 106, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.022220
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In this study, we investigate the open dynamics of a chain of interacting spins using the quantized version of a classical out-of-equilibrium thermodynamics equation. We focus on both equilibrium and nonequilibrium scenarios for chains of different sizes. The results show that the system reaches thermal equilibration in the equilibrium case, while in the nonequilibrium dynamics, there is a transition from ballistic to diffusive energy current and a scaling consistent with Fourier's law of heat transfer.
We investigate the open dynamics of a chain of interacting spins using the quantized version of the general equation for the nonequilibrium reversible-irreversible coupling equation from classical out-of-equilibrium thermodynamics. We focus on both equilibrium and nonequilibrium scenarios for chains of different sizes. Whereas in the equilibrium case we demonstrate thermal equilibration to the correct many-body Gibbs density matrix, in the nonequilibrium dynamics we show a ballistic-to-diffusive transition in the steady-state energy current and a scaling that is consistent with Fourier's law of heat transfer.
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