Relaxation of dynamically prepared out-of-equilibrium initial states within and beyond linear response theory.

@article{Richter2019RelaxationOD,
  title={Relaxation of dynamically prepared out-of-equilibrium initial states within and beyond linear response theory.},
  author={Jonas Richter and Mats H. Lamann and C. Bartsch and R. Steinigeweg and J. Gemmer},
  journal={Physical review. E},
  year={2019},
  volume={100 3-1},
  pages={
          032124
        }
}
We consider a realistic nonequilibrium protocol, where a quantum system in thermal equilibrium is suddenly subjected to an external force. Due to this force, the system is driven out of equilibrium and the expectation values of certain observables acquire a dependence on time. Eventually, upon switching off the external force, the system unitarily evolves under its own Hamiltonian and, as a consequence, the expectation values of observables equilibrate towards specific constant long-time values… Expand

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